ncurses 6.2 - patch 20200606
[ncurses.git] / progs / tic.c
index 5921b34038f0005f79091e1efca9c2f550f066e9..ae172ece9fc93f4f17617f3a381cbb5f8e818592 100644 (file)
+/****************************************************************************
+ * Copyright 2018-2019,2020 Thomas E. Dickey                                *
+ * Copyright 1998-2017,2018 Free Software Foundation, Inc.                  *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
 
-/***************************************************************************
-*                            COPYRIGHT NOTICE                              *
-****************************************************************************
-*                ncurses is copyright (C) 1992-1995                        *
-*                          Zeyd M. Ben-Halim                               *
-*                          zmbenhal@netcom.com                             *
-*                          Eric S. Raymond                                 *
-*                          esr@snark.thyrsus.com                           *
-*                                                                          *
-*        Permission is hereby granted to reproduce and distribute ncurses  *
-*        by any means and for any fee, whether alone or as part of a       *
-*        larger distribution, in source or in binary form, PROVIDED        *
-*        this notice is included with any such distribution, and is not    *
-*        removed from any of its header files. Mention of ncurses in any   *
-*        applications linked with it is highly appreciated.                *
-*                                                                          *
-*        ncurses comes AS IS with no warranty, implied or expressed.       *
-*                                                                          *
-***************************************************************************/
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Thomas E. Dickey                        1996 on                 *
+ ****************************************************************************/
 
 /*
  *     tic.c --- Main program for terminfo compiler
  *                     by Eric S. Raymond
+ *                     and Thomas E Dickey
  *
  */
 
 #include <progs.priv.h>
-
-#include <ctype.h>
+#include <sys/stat.h>
 
 #include <dump_entry.h>
-#include <term_entry.h>
+#include <tparm_type.h>
+#include <hashed_db.h>
+#include <parametrized.h>
+#include <transform.h>
+
+MODULE_ID("$Id: tic.c,v 1.286 2020/05/31 21:05:44 tom Exp $")
 
-MODULE_ID("$Id: tic.c,v 1.21 1996/12/30 02:24:15 tom Exp $")
+#define STDIN_NAME "<stdin>"
 
 const char *_nc_progname = "tic";
 
-static FILE    *log_fp;
-static bool    showsummary = FALSE;
-
-static const   char usage_string[] = "[-hc] [-v[n]] [-e names] [-CILNRTrsw1] source-file\n";
-
-static void usage(void)
-{
-       static const char *const tbl[] = {
-       "Options:",
-       "  -1         format translation output one capability per line",
-       "  -C         translate entries to termcap source form",
-       "  -I         translate entries to terminfo source form",
-       "  -L         translate entries to full terminfo source form",
-       "  -N         disable smart defaults for source translation",
-       "  -R         restrict translation to given terminfo/termcap version",
-       "  -T         remove size-restrictions on compiled description",
-       "  -c         check only, validate input without compiling or translating",
-       "  -e<names>  translate/compile only entries named by comma-separated list",
-       "  -o<dir>    set output directory for compiled entry writes",
-       "  -r         force resolution of all use entries in source translation",
-       "  -s         print summary statistics",
-       "  -v[n]      set verbosity level",
-       "  -w[n]      set format width for translation output",
-       "",
-       "Parameters:",
-       "  <file>     file to translate or compile"
-       };
-       size_t j;
-
-       printf("Usage: %s %s\n", _nc_progname, usage_string);
-       for (j = 0; j < sizeof(tbl)/sizeof(tbl[0]); j++)
-               puts(tbl[j]);
-       exit(EXIT_FAILURE);
-}
-
-static bool immedhook(ENTRY *ep)
+static FILE *log_fp;
+static FILE *tmp_fp;
+static bool capdump = FALSE;   /* running as infotocap? */
+static bool infodump = FALSE;  /* running as captoinfo? */
+static bool showsummary = FALSE;
+static unsigned debug_level;
+static char **namelst = 0;
+static const char *to_remove;
+
+#if NCURSES_XNAMES
+static bool using_extensions = FALSE;
+#endif
+
+static void (*save_check_termtype) (TERMTYPE2 *, bool);
+static void check_termtype(TERMTYPE2 *tt, bool);
+
+static const char usage_string[] = "\
+[-e names] \
+[-o dir] \
+[-R name] \
+[-v[n]] \
+[-V] \
+[-w[n]] \
+[-\
+1\
+a\
+C\
+D\
+c\
+f\
+G\
+g\
+I\
+K\
+L\
+N\
+r\
+s\
+T\
+t\
+U\
+x\
+] \
+source-file\n";
+
+#if NO_LEAKS
+static void
+free_namelist(char **src)
+{
+    if (src != 0) {
+       int n;
+       for (n = 0; src[n] != 0; ++n)
+           free(src[n]);
+       free(src);
+    }
+}
+#endif
+
+static void
+cleanup(void)
+{
+    int rc;
+
+#if NO_LEAKS
+    free_namelist(namelst);
+    _nc_leaks_dump_entry();
+#endif
+    if (tmp_fp != 0)
+       fclose(tmp_fp);
+    if (to_remove != 0) {
+#if HAVE_REMOVE
+       rc = remove(to_remove);
+#else
+       rc = unlink(to_remove);
+#endif
+       if (rc != 0)
+           perror(to_remove);
+    }
+}
+
+static void
+failed(const char *msg)
+{
+    perror(msg);
+    ExitProgram(EXIT_FAILURE);
+}
+
+static void
+usage(void)
+{
+#define DATA(s) s "\n"
+    static const char options_string[] =
+    {
+       DATA("Options:")
+       DATA("  -0         format translation output all capabilities on one line")
+       DATA("  -1         format translation output one capability per line")
+#if NCURSES_XNAMES
+       DATA("  -a         retain commented-out capabilities (sets -x also)")
+#endif
+       DATA("  -C         translate entries to termcap source form")
+       DATA("  -D         print list of tic's database locations (first must be writable)")
+       DATA("  -c         check only, validate input without compiling or translating")
+       DATA("  -e<names>  translate/compile only entries named by comma-separated list")
+       DATA("  -f         format complex strings for readability")
+       DATA("  -G         format %{number} to %'char'")
+       DATA("  -g         format %'char' to %{number}")
+       DATA("  -I         translate entries to terminfo source form")
+       DATA("  -K         translate entries to termcap source form with BSD syntax")
+       DATA("  -L         translate entries to full terminfo source form")
+       DATA("  -N         disable smart defaults for source translation")
+       DATA("  -o<dir>    set output directory for compiled entry writes")
+       DATA("  -Q[n]      dump compiled description")
+       DATA("  -q    brief listing, removes headers")
+       DATA("  -R<name>   restrict translation to given terminfo/termcap version")
+       DATA("  -r         force resolution of all use entries in source translation")
+       DATA("  -s         print summary statistics")
+       DATA("  -T         remove size-restrictions on compiled description")
+#if NCURSES_XNAMES
+       DATA("  -t         suppress commented-out capabilities")
+#endif
+       DATA("  -U         suppress post-processing of entries")
+       DATA("  -V         print version")
+       DATA("  -W         wrap long strings according to -w[n] option")
+       DATA("  -v[n]      set verbosity level")
+       DATA("  -w[n]      set format width for translation output")
+#if NCURSES_XNAMES
+       DATA("  -x         treat unknown capabilities as user-defined")
+#endif
+       DATA("")
+       DATA("Parameters:")
+       DATA("  <file>     file to translate or compile")
+    };
+#undef DATA
+
+    fprintf(stderr, "Usage: %s %s\n", _nc_progname, usage_string);
+    fputs(options_string, stderr);
+    ExitProgram(EXIT_FAILURE);
+}
+
+#define L_BRACE '{'
+#define R_BRACE '}'
+#define S_QUOTE '\''
+
+static void
+write_it(ENTRY * ep)
+{
+    unsigned n;
+    int ch;
+    char *s, *d, *t;
+    char result[MAX_ENTRY_SIZE];
+
+    /*
+     * Look for strings that contain %{number}, convert them to %'char',
+     * which is shorter and runs a little faster.
+     */
+    for (n = 0; n < STRCOUNT; n++) {
+       s = ep->tterm.Strings[n];
+       if (VALID_STRING(s)
+           && strchr(s, L_BRACE) != 0) {
+           d = result;
+           t = s;
+           while ((ch = *t++) != 0) {
+               *d++ = (char) ch;
+               if (ch == '\\') {
+                   if ((*d++ = *t++) == '\0')
+                       break;
+               } else if ((ch == '%')
+                          && (*t == L_BRACE)) {
+                   char *v = 0;
+                   long value = strtol(t + 1, &v, 0);
+                   if (v != 0
+                       && *v == R_BRACE
+                       && value > 0
+                       && value != '\\'        /* FIXME */
+                       && value < 127
+                       && isprint((int) value)) {
+                       *d++ = S_QUOTE;
+                       *d++ = (char) value;
+                       *d++ = S_QUOTE;
+                       t = (v + 1);
+                   }
+               }
+           }
+           *d = 0;
+           if (strlen(result) < strlen(s))
+               _nc_STRCPY(s, result, strlen(s) + 1);
+       }
+    }
+
+    _nc_set_type(_nc_first_name(ep->tterm.term_names));
+    _nc_curr_line = (int) ep->startline;
+    _nc_write_entry(&ep->tterm);
+}
+
+static bool
+immedhook(ENTRY * ep GCC_UNUSED)
 /* write out entries with no use capabilities immediately to save storage */
 {
-#ifndef HAVE_BIG_CORE
+#if !HAVE_BIG_CORE
     /*
      * This is strictly a core-economy kluge.  The really clean way to handle
      * compilation is to slurp the whole file into core and then do all the
@@ -108,463 +287,2803 @@ static bool immedhook(ENTRY *ep)
      * make tic a bit faster (because the resolution code won't have to do
      * disk I/O nearly as often).
      */
-    if (ep->nuses == 0)
-    {
-       int     oldline = _nc_curr_line;
+    if (ep->nuses == 0) {
+       int oldline = _nc_curr_line;
 
-       _nc_set_type(_nc_first_name(ep->tterm.term_names));
-       _nc_curr_line = ep->startline;
-       _nc_write_entry(&ep->tterm);
+       write_it(ep);
        _nc_curr_line = oldline;
        free(ep->tterm.str_table);
-       return(TRUE);
+       return (TRUE);
     }
-    else
 #endif /* HAVE_BIG_CORE */
-       return(FALSE);
+    return (FALSE);
 }
 
-static void put_translate(int c)
+static void
+put_translate(int c)
 /* emit a comment char, translating terminfo names to termcap names */
 {
     static bool in_name = FALSE;
-    static char namebuf[132], suffix[132], *sp;
+    static size_t have, used;
+    static char *namebuf, *suffix;
 
-    if (!in_name)
-    {
-       if (c == '<')
-       {
-           in_name = TRUE;
-           sp = namebuf;
+    if (in_name) {
+       if (used + 1 >= have) {
+           have += 132;
+           if ((namebuf = typeRealloc(char, have, namebuf)) == 0)
+                 failed("put_translate namebuf");
+           if ((suffix = typeRealloc(char, have, suffix)) == 0)
+                 failed("put_translate suffix");
        }
-       else
+       if (c == '\n' || c == '@') {
+           namebuf[used++] = '\0';
+           (void) putchar('<');
+           (void) fputs(namebuf, stdout);
            putchar(c);
-    }
-    else if (c == '\n' || c == '@')
-    {
-       *sp++ = '\0';
-       (void) putchar('<');
-       (void) fputs(namebuf, stdout);
-       putchar(c);
-       in_name = FALSE;
-    }
-    else if (c != '>')
-       *sp++ = c;
-    else               /* ah! candidate name! */
-    {
-       char    *up, *tp;
+           in_name = FALSE;
+       } else if (c != '>') {
+           namebuf[used++] = (char) c;
+       } else {                /* ah! candidate name! */
+           char *up;
+           NCURSES_CONST char *tp;
 
-       *sp++ = '\0';
-       in_name = FALSE;
+           namebuf[used++] = '\0';
+           in_name = FALSE;
 
-       suffix[0] = '\0';
-       if ((up = strchr(namebuf, '#')) != 0
-        || (up = strchr(namebuf, '=')) != 0
-        || ((up = strchr(namebuf, '@')) != 0 && up[1] == '>'))
-       {
-           (void) strcpy(suffix, up);
-           *up = '\0';
-       }
+           suffix[0] = '\0';
+           if ((up = strchr(namebuf, '#')) != 0
+               || (up = strchr(namebuf, '=')) != 0
+               || ((up = strchr(namebuf, '@')) != 0 && up[1] == '>')) {
+               _nc_STRCPY(suffix, up, have);
+               *up = '\0';
+           }
 
-       if ((tp = nametrans(namebuf)) != (char *)NULL)
-       {
-           (void) putchar(':');
-           (void) fputs(tp, stdout);
-           (void) fputs(suffix, stdout);
-           (void) putchar(':');
+           if ((tp = nametrans(namebuf)) != 0) {
+               (void) putchar(':');
+               (void) fputs(tp, stdout);
+               (void) fputs(suffix, stdout);
+               (void) putchar(':');
+           } else {
+               /* couldn't find a translation, just dump the name */
+               (void) putchar('<');
+               (void) fputs(namebuf, stdout);
+               (void) fputs(suffix, stdout);
+               (void) putchar('>');
+           }
        }
-       else
-       {
-           /* couldn't find a translation, just dump the name */
-           (void) putchar('<');
-           (void) fputs(namebuf, stdout);
-           (void) fputs(suffix, stdout);
-           (void) putchar('>');
+    } else {
+       used = 0;
+       if (c == '<') {
+           in_name = TRUE;
+       } else {
+           putchar(c);
        }
-
     }
 }
 
 /* Returns a string, stripped of leading/trailing whitespace */
-static char *stripped(char *src)
+static char *
+stripped(char *src)
+{
+    char *dst = 0;
+
+    while (isspace(UChar(*src)))
+       src++;
+
+    if (*src != '\0') {
+       size_t len;
+
+       if ((dst = strdup(src)) == NULL) {
+           failed("strdup");
+       } else {
+           len = strlen(dst);
+           while (--len != 0 && isspace(UChar(dst[len])))
+               dst[len] = '\0';
+       }
+    }
+    return dst;
+}
+
+static FILE *
+open_tempfile(char *filename)
+{
+    FILE *result = 0;
+
+    _nc_STRCPY(filename, "/tmp/XXXXXX", PATH_MAX);
+#if HAVE_MKSTEMP
+    {
+       int oldmask = (int) umask(077);
+       int fd = mkstemp(filename);
+       if (fd >= 0)
+           result = fdopen(fd, "w");
+       umask((mode_t) oldmask);
+    }
+#else
+    if (tmpnam(filename) != 0)
+       result = fopen(filename, "w");
+#endif
+    return result;
+}
+
+static FILE *
+copy_input(FILE *source, const char *filename, char *alt_file)
+{
+    char my_altfile[PATH_MAX];
+    FILE *result = 0;
+    FILE *target = 0;
+    int ch;
+
+    if (alt_file == 0)
+       alt_file = my_altfile;
+
+    if (source == 0) {
+       failed("copy_input (source)");
+    } else if ((target = open_tempfile(alt_file)) == 0) {
+       failed("copy_input (target)");
+    } else {
+       clearerr(source);
+       for (;;) {
+           ch = fgetc(source);
+           if (feof(source)) {
+               break;
+           } else if (ferror(source)) {
+               failed(filename);
+           } else if (ch == 0) {
+               /* don't loop in case someone wants to convert /dev/zero */
+               fprintf(stderr, "%s: %s is not a text-file\n", _nc_progname, filename);
+               ExitProgram(EXIT_FAILURE);
+           }
+           fputc(ch, target);
+       }
+       fclose(source);
+       /*
+        * rewind() does not force the target file's data to disk (not does
+        * fflush()...).  So open a second stream on the data and then close
+        * the one that we were writing on before starting to read from the
+        * second stream.
+        */
+       result = fopen(alt_file, "r+");
+       fclose(target);
+       to_remove = strdup(alt_file);
+    }
+    return result;
+}
+
+static FILE *
+open_input(const char *filename, char *alt_file)
 {
-       while (isspace(*src))
-               src++;
-       if (*src != '\0') {
-               char *dst = strcpy(malloc(strlen(src)+1), src);
-               size_t len = strlen(dst);
-               while (--len != 0 && isspace(dst[len]))
-                       dst[len] = '\0';
-               return dst;
+    FILE *fp;
+    struct stat sb;
+    int mode;
+
+    if (!strcmp(filename, "-")) {
+       fp = copy_input(stdin, STDIN_NAME, alt_file);
+    } else if (stat(filename, &sb) < 0) {
+       fprintf(stderr, "%s: %s %s\n", _nc_progname, filename, strerror(errno));
+       ExitProgram(EXIT_FAILURE);
+    } else if ((mode = (sb.st_mode & S_IFMT)) == S_IFDIR
+              || (mode != S_IFREG && mode != S_IFCHR && mode != S_IFIFO)) {
+       fprintf(stderr, "%s: %s is not a file\n", _nc_progname, filename);
+       ExitProgram(EXIT_FAILURE);
+    } else {
+       fp = fopen(filename, "r");
+
+       if (fp == 0) {
+           fprintf(stderr, "%s: Can't open %s\n", _nc_progname, filename);
+           ExitProgram(EXIT_FAILURE);
+       }
+       if (mode != S_IFREG) {
+           if (alt_file != 0) {
+               FILE *fp2 = copy_input(fp, filename, alt_file);
+               fp = fp2;
+           } else {
+               fprintf(stderr, "%s: %s is not a file\n", _nc_progname, filename);
+               ExitProgram(EXIT_FAILURE);
+           }
        }
-       return 0;
+    }
+    return fp;
 }
 
 /* Parse the "-e" option-value into a list of names */
-static const char **make_namelist(char *src)
+static char **
+make_namelist(char *src)
 {
-       const char **dst = 0;
+    char **dst = 0;
 
-       char *s, *base;
-       size_t pass, n, nn;
-       char buffer[BUFSIZ];
+    char *s, *base;
+    unsigned pass, n, nn;
+    char buffer[BUFSIZ];
 
-       if (strchr(src, '/') != 0) {    /* a filename */
-               FILE *fp = fopen(src, "r");
-               if (fp == 0) {
-                       perror(src);
-                       exit(EXIT_FAILURE);
-               }
-               for (pass = 1; pass <= 2; pass++) {
-                       nn = 0;
-                       while (fgets(buffer, sizeof(buffer), fp) != 0) {
-                               if ((s = stripped(buffer)) != 0) {
-                                       if (dst != 0)
-                                               dst[nn] = s;
-                                       nn++;
-                               }
-                       }
-                       if (pass == 1) {
-                               dst = (const char **)calloc(nn+1, sizeof(*dst));
-                               rewind(fp);
-                       }
-               }
-               fclose(fp);
-       } else {                        /* literal list of names */
-               for (pass = 1; pass <= 2; pass++) {
-                       for (n = nn = 0, base = src; ; n++) {
-                               int mark = src[n];
-                               if (mark == ',' || mark == '\0') {
-                                       if (pass == 1) {
-                                               nn++;
-                                       } else {
-                                               src[n] = '\0';
-                                               if ((s = stripped(base)) != 0)
-                                                       dst[nn++] = s;
-                                               base = &src[n+1];
-                                       }
-                               }
-                               if (mark == '\0')
-                                       break;
-                       }
-                       if (pass == 1)
-                               dst = (const char **)calloc(nn+1, sizeof(*dst));
+    if (src == 0) {
+       /* EMPTY */ ;
+    } else if (strchr(src, '/') != 0) {                /* a filename */
+       FILE *fp = open_input(src, (char *) 0);
+
+       for (pass = 1; pass <= 2; pass++) {
+           nn = 0;
+           while (fgets(buffer, sizeof(buffer), fp) != 0) {
+               if ((s = stripped(buffer)) != 0) {
+                   if (dst != 0)
+                       dst[nn] = s;
+                   else
+                       free(s);
+                   nn++;
                }
+           }
+           if (pass == 1) {
+               if ((dst = typeCalloc(char *, nn + 1)) == 0)
+                     failed("make_namelist");
+               rewind(fp);
+           }
        }
-       if (showsummary) {
-               fprintf(log_fp, "Entries that will be compiled:\n");
-               for (n = 0; dst[n] != 0; n++)
-                       fprintf(log_fp, "%d:%s\n", n+1, dst[n]);
+       fclose(fp);
+    } else {                   /* literal list of names */
+       for (pass = 1; pass <= 2; pass++) {
+           for (n = nn = 0, base = src;; n++) {
+               int mark = src[n];
+               if (mark == ',' || mark == '\0') {
+                   if (pass == 1) {
+                       nn++;
+                   } else {
+                       src[n] = '\0';
+                       if ((s = stripped(base)) != 0)
+                           dst[nn++] = s;
+                       base = &src[n + 1];
+                   }
+               }
+               if (mark == '\0')
+                   break;
+           }
+           if (pass == 1) {
+               if ((dst = typeCalloc(char *, nn + 1)) == 0)
+                     failed("make_namelist");
+           }
        }
-       return dst;
+    }
+    if (showsummary && (dst != 0)) {
+       fprintf(log_fp, "Entries that will be compiled:\n");
+       for (n = 0; dst[n] != 0; n++)
+           fprintf(log_fp, "%u:%s\n", n + 1, dst[n]);
+    }
+    return dst;
 }
 
-static bool matches(const char **needle, const char *haystack)
+static bool
+matches(char **needle, const char *haystack)
 /* does entry in needle list match |-separated field in haystack? */
 {
-       int code = FALSE;
-       size_t n;
+    bool code = FALSE;
+    size_t n;
 
-       if (needle != 0)
-       {
-               for (n = 0; needle[n] != 0; n++)
-               {
-                       if (_nc_name_match(haystack, needle[n], "|"))
-                       {
-                               code = TRUE;
-                               break;
-                       }
-               }
-       }
-       else
+    if (needle != 0) {
+       for (n = 0; needle[n] != 0; n++) {
+           if (_nc_name_match(haystack, needle[n], "|")) {
                code = TRUE;
-       return(code);
+               break;
+           }
+       }
+    } else
+       code = TRUE;
+    return (code);
 }
 
-int main (int argc, char *argv[])
+static char *
+valid_db_path(const char *nominal)
 {
-int    v_opt = -1, debug_level;
-int    smart_defaults = TRUE;
-char    *termcap;
-ENTRY  *qp;
+    struct stat sb;
+#if USE_HASHED_DB
+    char suffix[] = DBM_SUFFIX;
+    size_t need = strlen(nominal) + sizeof(suffix);
+    char *result = malloc(need);
 
-int    this_opt, last_opt = '?';
+    if (result == 0)
+       failed("valid_db_path");
+    _nc_STRCPY(result, nominal, need);
+    if (strcmp(result + need - sizeof(suffix), suffix)) {
+       _nc_STRCAT(result, suffix, need);
+    }
+#else
+    char *result = strdup(nominal);
+#endif
 
-int    outform = F_TERMINFO;   /* output format */
-int    sortmode = S_TERMINFO;  /* sort_mode */
+    DEBUG(1, ("** stat(%s)", result));
+    if (stat(result, &sb) >= 0) {
+#if USE_HASHED_DB
+       if (!S_ISREG(sb.st_mode)
+           || access(result, R_OK | W_OK) != 0) {
+           DEBUG(1, ("...not a writable file"));
+           free(result);
+           result = 0;
+       }
+#else
+       if (!S_ISDIR(sb.st_mode)
+           || access(result, R_OK | W_OK | X_OK) != 0) {
+           DEBUG(1, ("...not a writable directory"));
+           free(result);
+           result = 0;
+       }
+#endif
+    } else {
+       /* check if parent is directory and is writable */
+       unsigned leaf = _nc_pathlast(result);
 
-int    width = 60;
-bool   infodump = FALSE;       /* running as captoinfo? */
-bool   capdump = FALSE;        /* running as infotocap? */
-bool   forceresolve = FALSE;   /* force resolution */
-bool   limited = TRUE;
-char   *tversion = (char *)NULL;
-const  char    *source_file = "terminfo";
-const  char    **namelst = 0;
-char   *outdir = (char *)NULL;
-bool   check_only = FALSE;
+       DEBUG(1, ("...not found"));
+       if (leaf) {
+           char save = result[leaf];
+           result[leaf] = 0;
+           if (stat(result, &sb) >= 0
+               && S_ISDIR(sb.st_mode)
+               && access(result, R_OK | W_OK | X_OK) == 0) {
+               result[leaf] = save;
+           } else {
+               DEBUG(1, ("...parent directory %s is not writable", result));
+               free(result);
+               result = 0;
+           }
+       } else {
+           DEBUG(1, ("... no parent directory"));
+           free(result);
+           result = 0;
+       }
+    }
+    return result;
+}
 
-       log_fp = stderr;
+/*
+ * Show the databases to which tic could write.  The location to which it
+ * writes is always the first one.  If none are writable, print an error
+ * message.
+ */
+static void
+show_databases(const char *outdir)
+{
+    bool specific = (outdir != 0) || getenv("TERMINFO") != 0;
+    char *result;
+    const char *tried = 0;
 
-       if ((_nc_progname = strrchr(argv[0], '/')) == NULL)
-               _nc_progname = argv[0];
-       else
-               _nc_progname++;
+    if (outdir == 0) {
+       outdir = _nc_tic_dir(0);
+    }
+    if ((result = valid_db_path(outdir)) != 0) {
+       printf("%s\n", result);
+       free(result);
+    } else {
+       tried = outdir;
+    }
 
-       infodump = (strcmp(_nc_progname, "captoinfo") == 0);
-       capdump = (strcmp(_nc_progname, "infotocap") == 0);
+    if ((outdir = _nc_home_terminfo())) {
+       if ((result = valid_db_path(outdir)) != 0) {
+           printf("%s\n", result);
+           free(result);
+       } else if (!specific) {
+           tried = outdir;
+       }
+    }
 
-       /*
-        * Processing arguments is a little complicated, since someone made a
-        * design decision to allow the numeric values for -w, -v options to
-        * be optional.
-        */
-       while ((this_opt = getopt(argc, argv, "0123456789CILNR:TVce:orsvw")) != EOF) {
-               if (isdigit(this_opt)) {
-                       switch (last_opt) {
-                       case 'v':
-                               v_opt = (v_opt * 10) + (this_opt - '0');
-                               break;
-                       case 'w':
-                               width = (width * 10) + (this_opt - '0');
-                               break;
-                       default:
-                               if (this_opt != '1')
-                                       usage();
-                               last_opt = this_opt;
-                               width = 0;
-                       }
-                       continue;
-               }
+    /*
+     * If we can write in neither location, give an error message.
+     */
+    if (tried) {
+       fflush(stdout);
+       fprintf(stderr, "%s: %s (no permission)\n", _nc_progname, tried);
+       ExitProgram(EXIT_FAILURE);
+    }
+}
+
+static void
+add_digit(int *target, int source)
+{
+    *target = (*target * 10) + (source - '0');
+}
+
+int
+main(int argc, char *argv[])
+{
+    char my_tmpname[PATH_MAX];
+    char my_altfile[PATH_MAX];
+    int v_opt = -1;
+    int smart_defaults = TRUE;
+    char *termcap;
+    ENTRY *qp;
+
+    int this_opt, last_opt = '?';
+
+    int outform = F_TERMINFO;  /* output format */
+    int sortmode = S_TERMINFO; /* sort_mode */
+
+    int width = 60;
+    int height = 65535;
+    bool formatted = FALSE;    /* reformat complex strings? */
+    bool literal = FALSE;      /* suppress post-processing? */
+    int numbers = 0;           /* format "%'char'" to/from "%{number}" */
+    bool forceresolve = FALSE; /* force resolution */
+    bool limited = TRUE;
+    char *tversion = (char *) NULL;
+    const char *source_file = "terminfo";
+    char *outdir = (char *) NULL;
+    bool check_only = FALSE;
+    bool suppress_untranslatable = FALSE;
+    int quickdump = 0;
+    bool quiet = FALSE;
+    bool wrap_strings = FALSE;
+
+    log_fp = stderr;
+
+    _nc_progname = _nc_rootname(argv[0]);
+    atexit(cleanup);
+
+    if ((infodump = same_program(_nc_progname, PROG_CAPTOINFO)) != FALSE) {
+       outform = F_TERMINFO;
+       sortmode = S_TERMINFO;
+    }
+    if ((capdump = same_program(_nc_progname, PROG_INFOTOCAP)) != FALSE) {
+       outform = F_TERMCAP;
+       sortmode = S_TERMCAP;
+    }
+#if NCURSES_XNAMES
+    use_extended_names(FALSE);
+#endif
+    _nc_strict_bsd = 0;
+
+    /*
+     * Processing arguments is a little complicated, since someone made a
+     * design decision to allow the numeric values for -w, -v options to
+     * be optional.
+     */
+    while ((this_opt = getopt(argc, argv,
+                             "0123456789CDIKLNQR:TUVWace:fGgo:qrstvwx")) != -1) {
+       if (isdigit(this_opt)) {
+           switch (last_opt) {
+           case 'Q':
+               add_digit(&quickdump, this_opt);
+               break;
+           case 'v':
+               add_digit(&v_opt, this_opt);
+               break;
+           case 'w':
+               add_digit(&width, this_opt);
+               break;
+           default:
                switch (this_opt) {
-               case 'C':
-                       capdump  = TRUE;
-                       outform  = F_TERMCAP;
-                       sortmode = S_TERMCAP;
-                       break;
-               case 'I':
-                       infodump = TRUE;
-                       outform  = F_TERMINFO;
-                       sortmode = S_TERMINFO;
-                       break;
-               case 'L':
-                       infodump = TRUE;
-                       outform  = F_VARIABLE;
-                       sortmode = S_VARIABLE;
-                       break;
-               case 'N':
-                       smart_defaults = FALSE;
-                       break;
-               case 'R':
-                       tversion = optarg;
-                       break;
-               case 'T':
-                       limited = FALSE;
-                       break;
-               case 'V':
-                       puts(NCURSES_VERSION);
-                       return EXIT_SUCCESS;
-               case 'c':
-                       check_only = TRUE;
-                       break;
-               case 'e':
-                       namelst = make_namelist(optarg);
-                       break;
-               case 'o':
-                       outdir = optarg;
-                       break;
-               case 'r':
-                       forceresolve = TRUE;
-                       break;
-               case 's':
-                       showsummary = TRUE;
-                       break;
-               case 'v':
-                       v_opt = 0;
-                       break;
-               case 'w':
-                       width = 0;
-                       break;
+               case '0':
+                   last_opt = this_opt;
+                   width = 65535;
+                   height = 1;
+                   break;
+               case '1':
+                   last_opt = this_opt;
+                   width = 0;
+                   break;
                default:
-                       usage();
+                   usage();
                }
-               last_opt = this_opt;
+           }
+           continue;
        }
+       switch (this_opt) {
+       case 'K':
+           _nc_strict_bsd = 1;
+           /* the initial version of -K in 20110730 fell-thru here, but the
+            * same flag is useful when reading sources -TD
+            */
+           break;
+       case 'C':
+           capdump = TRUE;
+           outform = F_TERMCAP;
+           sortmode = S_TERMCAP;
+           break;
+       case 'D':
+           debug_level = VtoTrace(v_opt);
+           set_trace_level(debug_level);
+           show_databases(outdir);
+           ExitProgram(EXIT_SUCCESS);
+           break;
+       case 'I':
+           infodump = TRUE;
+           outform = F_TERMINFO;
+           sortmode = S_TERMINFO;
+           break;
+       case 'L':
+           infodump = TRUE;
+           outform = F_VARIABLE;
+           sortmode = S_VARIABLE;
+           break;
+       case 'N':
+           smart_defaults = FALSE;
+           literal = TRUE;
+           break;
+       case 'Q':
+           quickdump = 0;
+           break;
+       case 'R':
+           tversion = optarg;
+           break;
+       case 'T':
+           limited = FALSE;
+           break;
+       case 'U':
+           literal = TRUE;
+           break;
+       case 'V':
+           puts(curses_version());
+           ExitProgram(EXIT_SUCCESS);
+       case 'W':
+           wrap_strings = TRUE;
+           break;
+       case 'c':
+           check_only = TRUE;
+           break;
+       case 'e':
+           namelst = make_namelist(optarg);
+           break;
+       case 'f':
+           formatted = TRUE;
+           break;
+       case 'G':
+           numbers = 1;
+           break;
+       case 'g':
+           numbers = -1;
+           break;
+       case 'o':
+           outdir = optarg;
+           break;
+       case 'q':
+           quiet = TRUE;
+           break;
+       case 'r':
+           forceresolve = TRUE;
+           break;
+       case 's':
+           showsummary = TRUE;
+           break;
+       case 'v':
+           v_opt = 0;
+           break;
+       case 'w':
+           width = 0;
+           break;
+#if NCURSES_XNAMES
+       case 't':
+           _nc_disable_period = FALSE;
+           suppress_untranslatable = TRUE;
+           break;
+       case 'a':
+           _nc_disable_period = TRUE;
+           /* FALLTHRU */
+       case 'x':
+           use_extended_names(TRUE);
+           using_extensions = TRUE;
+           break;
+#endif
+       default:
+           usage();
+       }
+       last_opt = this_opt;
+    }
 
-       debug_level = (v_opt > 0) ? v_opt : (v_opt == 0);
-       _nc_tracing = (1 << debug_level) - 1;
+    debug_level = VtoTrace(v_opt);
+    set_trace_level(debug_level);
+
+    if (_nc_tracing) {
+       save_check_termtype = _nc_check_termtype2;
+       _nc_check_termtype2 = check_termtype;
+    }
+#if !HAVE_BIG_CORE
+    /*
+     * Aaargh! immedhook seriously hoses us!
+     *
+     * One problem with immedhook is it means we can't do -e.  Problem
+     * is that we can't guarantee that for each terminal listed, all the
+     * terminals it depends on will have been kept in core for reference
+     * resolution -- in fact it's certain the primitive types at the end
+     * of reference chains *won't* be in core unless they were explicitly
+     * in the select list themselves.
+     */
+    if (namelst && (!infodump && !capdump)) {
+       (void) fprintf(stderr,
+                      "%s: Sorry, -e can't be used without -I or -C\n",
+                      _nc_progname);
+       ExitProgram(EXIT_FAILURE);
+    }
+#endif /* HAVE_BIG_CORE */
 
+    if (optind < argc) {
+       source_file = argv[optind++];
        if (optind < argc) {
-               source_file = argv[optind++];
-               if (optind < argc) {
-                       fprintf (stderr,
-                               "%s: Too many file names.  Usage:\n\t%s %s",
-                               _nc_progname,
-                               _nc_progname,
-                               usage_string);
-                       return EXIT_FAILURE;
-               }
-       } else {
-               if (infodump == TRUE) {
-                       /* captoinfo's no-argument case */
-                       source_file = "/etc/termcap";
-                       if ((termcap = getenv("TERMCAP")) != NULL) {
-                               if (access(termcap, F_OK) == 0) {
-                                       /* file exists */
-                                       source_file = termcap;
-                               }
-                       }
+           fprintf(stderr,
+                   "%s: Too many file names.  Usage:\n\t%s %s",
+                   _nc_progname,
+                   _nc_progname,
+                   usage_string);
+           ExitProgram(EXIT_FAILURE);
+       }
+    } else {
+       if (infodump == TRUE) {
+           /* captoinfo's no-argument case */
+           source_file = "/etc/termcap";
+           if ((termcap = getenv("TERMCAP")) != 0
+               && (namelst = make_namelist(getenv("TERM"))) != 0) {
+               if (access(termcap, F_OK) == 0) {
+                   /* file exists */
+                   source_file = termcap;
                } else {
-               /* tic */
-                       fprintf (stderr,
-                               "%s: File name needed.  Usage:\n\t%s %s",
-                               _nc_progname,
-                               _nc_progname,
-                               usage_string);
-                       return EXIT_FAILURE;
+                   if ((tmp_fp = open_tempfile(my_tmpname)) != 0) {
+                       source_file = my_tmpname;
+                       fprintf(tmp_fp, "%s\n", termcap);
+                       fclose(tmp_fp);
+                       tmp_fp = open_input(source_file, (char *) 0);
+                       to_remove = source_file;
+                   } else {
+                       failed("tmpnam");
+                   }
                }
+           }
+       } else {
+           /* tic */
+           fprintf(stderr,
+                   "%s: File name needed.  Usage:\n\t%s %s",
+                   _nc_progname,
+                   _nc_progname,
+                   usage_string);
+           ExitProgram(EXIT_FAILURE);
        }
+    }
 
-       if (freopen(source_file, "r", stdin) == NULL) {
-               fprintf (stderr, "%s: Can't open %s\n", _nc_progname, source_file);
-               return EXIT_FAILURE;
+    if (tmp_fp == 0) {
+       tmp_fp = open_input(source_file, my_altfile);
+       if (!strcmp(source_file, "-")) {
+           source_file = STDIN_NAME;
        }
+    }
 
-       if (infodump)
-               dump_init(tversion,
-                         smart_defaults
-                               ? outform
-                               : F_LITERAL,
-                         sortmode, width, debug_level);
-       else if (capdump)
-               dump_init(tversion,
-                         outform,
-                         sortmode, width, debug_level);
+    if (infodump || check_only) {
+       dump_init(tversion,
+                 (smart_defaults
+                  ? outform
+                  : F_LITERAL),
+                 sortmode,
+                 wrap_strings, width, height,
+                 debug_level, formatted || check_only, check_only, quickdump);
+    } else if (capdump) {
+       dump_init(tversion,
+                 outform,
+                 sortmode,
+                 wrap_strings, width, height,
+                 debug_level, FALSE, FALSE, FALSE);
+    }
 
-       /* parse entries out of the source file */
-       _nc_set_source(source_file);
-#ifndef HAVE_BIG_CORE
-       if (!(check_only || infodump || capdump))
-           _nc_set_writedir(outdir);
+    /* parse entries out of the source file */
+    _nc_set_source(source_file);
+#if !HAVE_BIG_CORE
+    if (!(check_only || infodump || capdump))
+       _nc_set_writedir(outdir);
 #endif /* HAVE_BIG_CORE */
-       _nc_read_entry_source(stdin, (char *)NULL,
-                             !smart_defaults, FALSE,
-                             (check_only || infodump || capdump) ? NULLHOOK : immedhook);
+    _nc_read_entry_source(tmp_fp, (char *) NULL,
+                         !smart_defaults || literal, FALSE,
+                         ((check_only || infodump || capdump)
+                          ? NULLHOOK
+                          : immedhook));
 
-       /* do use resolution */
-       if (check_only || (!infodump && !capdump) || forceresolve)
-           if (!_nc_resolve_uses() && !check_only)
-               return EXIT_FAILURE;
+    /* do use resolution */
+    if (check_only || (!infodump && !capdump) || forceresolve) {
+       if (!_nc_resolve_uses2(TRUE, literal) && !check_only) {
+           ExitProgram(EXIT_FAILURE);
+       }
+    }
 
-#ifndef HAVE_BIG_CORE
-       /*
-        * Aaargh! immedhook seriously hoses us!
-        *
-        * One problem with immedhook is it means we can't do -e.  Problem
-        * is that we can't guarantee that for each terminal listed, all the
-        * terminals it depends on will have been kept in core for reference
-        * resolution -- in fact it's certain the primitive types at the end
-        * of reference chains *won't* be in core unless they were explicitly
-        * in the select list themselves.
-        */
-       if (namelst && (!infodump && !capdump))
-       {
-           (void) fprintf(stderr,
-                          "Sorry, -e can't be used without -I or -C\n");
-           return EXIT_FAILURE;
+    /* length check */
+    if (check_only && limited && (capdump || infodump)) {
+       for_entry_list(qp) {
+           if (matches(namelst, qp->tterm.term_names)) {
+               int len = fmt_entry(&qp->tterm, NULL, FALSE, TRUE, infodump, numbers);
+
+               if (len > (infodump ? MAX_TERMINFO_LENGTH : MAX_TERMCAP_LENGTH))
+                   (void) fprintf(stderr,
+                                  "%s: resolved %s entry is %d bytes long\n",
+                                  _nc_progname,
+                                  _nc_first_name(qp->tterm.term_names),
+                                  len);
+           }
        }
-#endif /* HAVE_BIG_CORE */
+    }
 
-       /* length check */
-       if (check_only && (capdump || infodump))
-       {
-           for_entry_list(qp)
-           {
-               if (matches(namelst, qp->tterm.term_names))
-               {
-                   int len = fmt_entry(&qp->tterm, NULL, TRUE, infodump);
-
-                   if (len>(infodump?MAX_TERMINFO_LENGTH:MAX_TERMCAP_LENGTH))
-                           (void) fprintf(stderr,
-                          "warning: resolved %s entry is %d bytes long\n",
-                          _nc_first_name(qp->tterm.term_names),
-                          len);
-               }
+    /* write or dump all entries */
+    if (check_only) {
+       /* this is in case infotocap() generates warnings */
+       _nc_curr_col = _nc_curr_line = -1;
+
+       for_entry_list(qp) {
+           if (matches(namelst, qp->tterm.term_names)) {
+               /* this is in case infotocap() generates warnings */
+               _nc_set_type(_nc_first_name(qp->tterm.term_names));
+               _nc_curr_line = (int) qp->startline;
+               repair_acsc(&qp->tterm);
+               dump_entry(&qp->tterm, suppress_untranslatable,
+                          limited, numbers, NULL);
            }
        }
+    } else {
+       if (!infodump && !capdump) {
+           _nc_set_writedir(outdir);
+           for_entry_list(qp) {
+               if (matches(namelst, qp->tterm.term_names))
+                   write_it(qp);
+           }
+       } else {
+           /* this is in case infotocap() generates warnings */
+           _nc_curr_col = _nc_curr_line = -1;
 
-       /* write or dump all entries */
-       if (!check_only)
-       {
-           if (!infodump && !capdump)
-           {
-               _nc_set_writedir(outdir);
-               for_entry_list(qp)
-                   if (matches(namelst, qp->tterm.term_names))
-                   {
-                       _nc_set_type(_nc_first_name(qp->tterm.term_names));
-                       _nc_curr_line = qp->startline;
-                       _nc_write_entry(&qp->tterm);
+           for_entry_list(qp) {
+               if (matches(namelst, qp->tterm.term_names)) {
+                   long j = qp->cend - qp->cstart;
+                   int len = 0;
+
+                   /* this is in case infotocap() generates warnings */
+                   _nc_set_type(_nc_first_name(qp->tterm.term_names));
+
+                   if (!quiet) {
+                       (void) fseek(tmp_fp, qp->cstart, SEEK_SET);
+                       while (j-- > 0) {
+                           int ch = fgetc(tmp_fp);
+                           if (ch == EOF || ferror(tmp_fp)) {
+                               break;
+                           } else if (infodump) {
+                               (void) putchar(ch);
+                           } else {
+                               put_translate(ch);
+                           }
+                       }
                    }
+
+                   repair_acsc(&qp->tterm);
+                   dump_entry(&qp->tterm, suppress_untranslatable,
+                              limited, numbers, NULL);
+                   for (j = 0; j < (long) qp->nuses; j++)
+                       dump_uses(qp->uses[j].name, !capdump);
+                   len = show_entry();
+                   if (debug_level != 0 && !limited)
+                       printf("# length=%d\n", len);
+               }
            }
-           else
-           {
-               bool    trailing_comment = FALSE;
-               int     c, oldc = '\0';
+           if (!namelst && _nc_tail && !quiet) {
+               int c, oldc = '\0';
+               bool in_comment = FALSE;
+               bool trailing_comment = FALSE;
 
-               /* this is in case infotocap() generates warnings */
-               _nc_curr_col = _nc_curr_line = -1;
-
-               for_entry_list(qp)
-                   if (matches(namelst, qp->tterm.term_names))
-                   {
-                       int     j = qp->cend - qp->cstart;
-                       int     len = 0;
-
-                       /* this is in case infotocap() generates warnings */
-                       _nc_set_type(_nc_first_name(qp->tterm.term_names));
-
-                       (void) fseek(stdin, qp->cstart, SEEK_SET);
-                       while (j-- )
-                           if (infodump)
-                               (void) putchar(getchar());
-                           else
-                               put_translate(getchar());
-
-                       len = dump_entry(&qp->tterm, limited, NULL);
-                       for (j = 0; j < qp->nuses; j++)
-                           len += dump_uses((char *)(qp->uses[j].parent), infodump);
-                       (void) putchar('\n');
-                       if (debug_level != 0 && !limited)
-                           printf("# length=%d\n", len);
-                   }
-               if (!namelst)
-               {
-                   (void) fseek(stdin, _nc_tail->cend, SEEK_SET);
-                   while ((c = getchar()) != EOF)
-                   {
-                       if (oldc == '\n' && c == '#')
+               (void) fseek(tmp_fp, _nc_tail->cend, SEEK_SET);
+               while ((c = fgetc(tmp_fp)) != EOF) {
+                   if (oldc == '\n') {
+                       if (c == '#') {
                            trailing_comment = TRUE;
-                       if (trailing_comment)
-                           putchar(c);
-                       oldc = c;
+                           in_comment = TRUE;
+                       } else {
+                           in_comment = FALSE;
+                       }
                    }
+                   if (trailing_comment
+                       && (in_comment || (oldc == '\n' && c == '\n')))
+                       putchar(c);
+                   oldc = c;
                }
            }
        }
+    }
 
-       /* Show the directory into which entries were written, and the total
-        * number of entries
-        */
-       if (showsummary
-        && (!(check_only || infodump || capdump))) {
-               int total = _nc_tic_written();
-               if (total != 0)
-                       fprintf(log_fp, "%d entries written to %s\n",
-                               total,
-                               _nc_tic_dir((char *)0));
-               else
-                       fprintf(log_fp, "No entries written\n");
-       }
-       return(EXIT_SUCCESS);
+    /* Show the directory into which entries were written, and the total
+     * number of entries
+     */
+    if (showsummary
+       && (!(check_only || infodump || capdump))) {
+       int total = _nc_tic_written();
+       if (total != 0)
+           fprintf(log_fp, "%d entries written to %s\n",
+                   total,
+                   _nc_tic_dir((char *) 0));
+       else
+           fprintf(log_fp, "No entries written\n");
+    }
+    ExitProgram(EXIT_SUCCESS);
+}
+
+/*
+ * This bit of legerdemain turns all the terminfo variable names into
+ * references to locations in the arrays Booleans, Numbers, and Strings ---
+ * precisely what's needed (see comp_parse.c).
+ */
+#undef CUR
+#define CUR tp->
+
+/*
+ * Check if the alternate character-set capabilities are consistent.
+ */
+static void
+check_acs(TERMTYPE2 *tp)
+{
+    int vt100_smacs = 0;
+    int vt100_rmacs = 0;
+    int vt100_enacs = 0;
+
+    /*
+     * ena_acs is not always necessary, but if it is present, the enter/exit
+     * capabilities should be.
+     */
+    ANDMISSING(ena_acs, enter_alt_charset_mode);
+    ANDMISSING(ena_acs, exit_alt_charset_mode);
+    PAIRED(exit_alt_charset_mode, exit_alt_charset_mode);
+
+    /*
+     * vt100-like is frequently used, but perhaps ena_acs is missing, etc.
+     */
+    if (VALID_STRING(enter_alt_charset_mode)) {
+       vt100_smacs = (!strcmp("\033(0", enter_alt_charset_mode)
+                      ? 2
+                      : (!strcmp("\016", enter_alt_charset_mode)
+                         ? 1
+                         : 0));
+    }
+    if (VALID_STRING(exit_alt_charset_mode)) {
+       vt100_rmacs = (!strcmp("\033(B", exit_alt_charset_mode)
+                      ? 2
+                      : (!strcmp("\017", exit_alt_charset_mode)
+                         ? 1
+                         : 0));
+    }
+    if (VALID_STRING(ena_acs)) {
+       vt100_enacs = (!strcmp("\033(B\033)0", ena_acs)
+                      ? 2
+                      : 0);
+    }
+    if (vt100_rmacs && vt100_smacs && (vt100_rmacs != vt100_smacs)) {
+       _nc_warning("rmacs/smacs are inconsistent");
+    }
+    if ((vt100_rmacs == 2) && (vt100_smacs == 2) && vt100_enacs) {
+       _nc_warning("rmacs/smacs make enacs redundant");
+    }
+    if ((vt100_rmacs == 1) && (vt100_smacs == 1) && !vt100_enacs) {
+       _nc_warning("VT100-style rmacs/smacs require enacs");
+    }
+
+    if (VALID_STRING(acs_chars)) {
+       const char *boxes = "lmkjtuvwqxn";
+       char mapped[256];
+       char missing[256];
+       const char *p;
+       char *q;
+
+       memset(mapped, 0, sizeof(mapped));
+       for (p = acs_chars; *p != '\0'; p += 2) {
+           if (p[1] == '\0') {
+               _nc_warning("acsc has odd number of characters");
+               break;
+           }
+           mapped[UChar(p[0])] = p[1];
+       }
+
+       if (mapped[UChar('I')] && !mapped[UChar('i')]) {
+           _nc_warning("acsc refers to 'I', which is probably an error");
+       }
+
+       for (p = boxes, q = missing; *p != '\0'; ++p) {
+           if (!mapped[UChar(p[0])]) {
+               *q++ = p[0];
+           }
+       }
+       *q = '\0';
+
+       assert(strlen(missing) <= strlen(boxes));
+       if (*missing != '\0' && strcmp(missing, boxes)) {
+           _nc_warning("acsc is missing some line-drawing mapping: %s", missing);
+       }
+    }
+}
+
+static char *
+safe_strdup(const char *value)
+{
+    if (value == NULL)
+       value = "";
+    return strdup(value);
+}
+
+static bool
+same_color(NCURSES_CONST char *oldcap, NCURSES_CONST char *newcap, int limit)
+{
+    bool result = FALSE;
+    if (limit > 16)
+       limit = 16;
+    if (limit >= 8) {
+       int n;
+       int same;
+       for (n = same = 0; n < limit; ++n) {
+           char *oldvalue = safe_strdup(TIPARM_1(oldcap, n));
+           char *newvalue = safe_strdup(TIPARM_1(newcap, n));
+           same += !strcmp(oldvalue, newvalue);
+           free(oldvalue);
+           free(newvalue);
+       }
+       result = (same == limit);
+    }
+    return result;
+}
+
+/*
+ * Check if the color capabilities are consistent
+ */
+static void
+check_colors(TERMTYPE2 *tp)
+{
+    char *value;
+
+    if ((max_colors > 0) != (max_pairs > 0)
+       || ((max_colors > max_pairs) && (initialize_pair == 0)))
+       _nc_warning("inconsistent values for max_colors (%d) and max_pairs (%d)",
+                   max_colors, max_pairs);
+
+    PAIRED(set_foreground, set_background);
+    PAIRED(set_a_foreground, set_a_background);
+    PAIRED(set_color_pair, initialize_pair);
+
+    if (VALID_STRING(set_foreground)
+       && VALID_STRING(set_a_foreground)) {
+       if (!_nc_capcmp(set_foreground, set_a_foreground)) {
+           _nc_warning("expected setf/setaf to be different");
+       } else if (same_color(set_foreground, set_a_foreground, max_colors)) {
+           _nc_warning("setf/setaf are equivalent");
+       }
+    }
+
+    if (VALID_STRING(set_background)
+       && VALID_STRING(set_a_background)) {
+       if (!_nc_capcmp(set_background, set_a_background)) {
+           _nc_warning("expected setb/setab to be different");
+       } else if (same_color(set_background, set_a_background, max_colors)) {
+           _nc_warning("setb/setab are equivalent");
+       }
+    }
+
+    /* see: has_colors() */
+    if (VALID_NUMERIC(max_colors) && VALID_NUMERIC(max_pairs)
+       && ((VALID_STRING(set_foreground)
+            && VALID_STRING(set_background))
+           || (VALID_STRING(set_a_foreground)
+               && VALID_STRING(set_a_background))
+           || set_color_pair)) {
+       if (!VALID_STRING(orig_pair) && !VALID_STRING(orig_colors))
+           _nc_warning("expected either op/oc string for resetting colors");
+    }
+    if (can_change) {
+       if (!VALID_STRING(initialize_pair) &&
+           !VALID_STRING(initialize_color)) {
+           _nc_warning("expected initc or initp because ccc is given");
+       }
+    } else {
+       if (VALID_STRING(initialize_pair) ||
+           VALID_STRING(initialize_color)) {
+           _nc_warning("expected ccc because initc is given");
+       }
+    }
+    value = tigetstr("RGB");
+    if (VALID_STRING(value)) {
+       int r, g, b;
+       char bad;
+       int code = sscanf(value, "%d/%d/%d%c", &r, &g, &b, &bad);
+       if (code != 3 || r <= 0 || g <= 0 || b <= 0) {
+           _nc_warning("unexpected value for RGB capability: %s", value);
+       }
+    }
+}
+
+static int
+csi_length(const char *value)
+{
+    int result = 0;
+
+    if (value[0] == '\033' && value[1] == '[') {
+       result = 2;
+    } else if (UChar(value[0]) == 0x9a) {
+       result = 1;
+    }
+    return result;
+}
+
+static char
+keypad_final(const char *string)
+{
+    char result = '\0';
+
+    if (VALID_STRING(string)
+       && *string++ == '\033'
+       && *string++ == 'O'
+       && strlen(string) == 1) {
+       result = *string;
+    }
+
+    return result;
+}
+
+static long
+keypad_index(const char *string)
+{
+    char *test;
+    const char *list = "PQRSwxymtuvlqrsPpn";   /* app-keypad except "Enter" */
+    int ch;
+    long result = -1;
+
+    if ((ch = keypad_final(string)) != '\0') {
+       test = (strchr) (list, ch);
+       if (test != 0)
+           result = (long) (test - list);
+    }
+    return result;
+}
+
+/*
+ * list[] is down, up, left, right
+ * "left" may be ^H rather than \E[D
+ * "down" may be ^J rather than \E[B
+ * But up/right are generally consistently escape sequences for ANSI terminals.
+ */
+static void
+check_ansi_cursor(char *list[4])
+{
+    int j, k;
+    int want;
+    size_t suffix;
+    bool skip[4];
+    bool repeated = FALSE;
+
+    for (j = 0; j < 4; ++j) {
+       skip[j] = FALSE;
+       for (k = 0; k < j; ++k) {
+           if (j != k
+               && !strcmp(list[j], list[k])) {
+               char *value = _nc_tic_expand(list[k], TRUE, 0);
+               _nc_warning("repeated cursor control %s\n", value);
+               repeated = TRUE;
+           }
+       }
+    }
+    if (!repeated) {
+       char *up = list[1];
+       size_t prefix = (size_t) csi_length(up);
+
+       if (prefix) {
+           suffix = prefix;
+           while (up[suffix] && isdigit(UChar(up[suffix])))
+               ++suffix;
+       }
+       if (prefix && up[suffix] == 'A') {
+           skip[1] = TRUE;
+           if (!strcmp(list[0], "\n"))
+               skip[0] = TRUE;
+           if (!strcmp(list[2], "\b"))
+               skip[2] = TRUE;
+
+           for (j = 0; j < 4; ++j) {
+               if (skip[j] || strlen(list[j]) == 1)
+                   continue;
+               if (memcmp(list[j], up, prefix)) {
+                   char *value = _nc_tic_expand(list[j], TRUE, 0);
+                   _nc_warning("inconsistent prefix for %s\n", value);
+                   continue;
+               }
+               if (strlen(list[j]) < suffix) {
+                   char *value = _nc_tic_expand(list[j], TRUE, 0);
+                   _nc_warning("inconsistent length for %s, expected %d\n",
+                               value, (int) suffix + 1);
+                   continue;
+               }
+               want = "BADC"[j];
+               if (list[j][suffix] != want) {
+                   char *value = _nc_tic_expand(list[j], TRUE, 0);
+                   _nc_warning("inconsistent suffix for %s, expected %c, have %c\n",
+                               value, want, list[j][suffix]);
+               }
+           }
+       }
+    }
+}
+
+#define EXPECTED(name) if (!PRESENT(name)) _nc_warning("expected " #name)
+#define UNEXPECTED(name) if (PRESENT(name)) _nc_warning("unexpected " #name ", for %s", why)
+
+static void
+check_noaddress(TERMTYPE2 *tp, const char *why)
+{
+    UNEXPECTED(column_address);
+    UNEXPECTED(cursor_address);
+    UNEXPECTED(cursor_home);
+    UNEXPECTED(cursor_mem_address);
+    UNEXPECTED(cursor_to_ll);
+    UNEXPECTED(row_address);
+    UNEXPECTED(row_address);
+}
+
+static void
+check_cursor(TERMTYPE2 *tp)
+{
+    int count;
+    char *list[4];
+
+    if (hard_copy) {
+       check_noaddress(tp, "hard_copy");
+    } else if (generic_type) {
+       check_noaddress(tp, "generic_type");
+    } else if (strchr(tp->term_names, '+') == 0) {
+       int y = 0;
+       int x = 0;
+       if (PRESENT(column_address))
+           ++y;
+       if (PRESENT(cursor_address))
+           y = x = 10;
+       if (PRESENT(cursor_home))
+           ++y, ++x;
+       if (PRESENT(cursor_mem_address))
+           y = x = 10;
+       if (PRESENT(cursor_to_ll))
+           ++y, ++x;
+       if (PRESENT(row_address))
+           ++x;
+       if (PRESENT(cursor_down))
+           ++y;
+       if (PRESENT(cursor_up))
+           ++y;
+       if (PRESENT(cursor_left))
+           ++x;
+       if (PRESENT(cursor_right))
+           ++x;
+       if (x < 2 && y < 2) {
+           _nc_warning("terminal lacks cursor addressing");
+       } else {
+           if (x < 2)
+               _nc_warning("terminal lacks cursor column-addressing");
+           if (y < 2)
+               _nc_warning("terminal lacks cursor row-addressing");
+       }
+    }
+
+    /* it is rare to have an insert-line feature without a matching delete */
+    ANDMISSING(parm_insert_line, insert_line);
+    ANDMISSING(parm_delete_line, delete_line);
+    ANDMISSING(parm_insert_line, parm_delete_line);
+
+    /* if we have a parameterized form, then the non-parameterized is easy */
+    ANDMISSING(parm_down_cursor, cursor_down);
+    ANDMISSING(parm_up_cursor, cursor_up);
+    ANDMISSING(parm_left_cursor, cursor_left);
+    ANDMISSING(parm_right_cursor, cursor_right);
+
+    /* Given any of a set of cursor movement, the whole set should be present.
+     * Technically this is not true (we could use cursor_address to fill in
+     * unsupported controls), but it is likely.
+     */
+    count = 0;
+    if (PRESENT(parm_down_cursor)) {
+       list[count++] = parm_down_cursor;
+    }
+    if (PRESENT(parm_up_cursor)) {
+       list[count++] = parm_up_cursor;
+    }
+    if (PRESENT(parm_left_cursor)) {
+       list[count++] = parm_left_cursor;
+    }
+    if (PRESENT(parm_right_cursor)) {
+       list[count++] = parm_right_cursor;
+    }
+    if (count == 4) {
+       check_ansi_cursor(list);
+    } else if (count != 0) {
+       EXPECTED(parm_down_cursor);
+       EXPECTED(parm_up_cursor);
+       EXPECTED(parm_left_cursor);
+       EXPECTED(parm_right_cursor);
+    }
+
+    count = 0;
+    if (PRESENT(cursor_down)) {
+       list[count++] = cursor_down;
+    }
+    if (PRESENT(cursor_up)) {
+       list[count++] = cursor_up;
+    }
+    if (PRESENT(cursor_left)) {
+       list[count++] = cursor_left;
+    }
+    if (PRESENT(cursor_right)) {
+       list[count++] = cursor_right;
+    }
+    if (count == 4) {
+       check_ansi_cursor(list);
+    } else if (count != 0) {
+       count = 0;
+       if (PRESENT(cursor_down) && strcmp(cursor_down, "\n"))
+           ++count;
+       if (PRESENT(cursor_left) && strcmp(cursor_left, "\b"))
+           ++count;
+       if (PRESENT(cursor_up) && strlen(cursor_up) > 1)
+           ++count;
+       if (PRESENT(cursor_right) && strlen(cursor_right) > 1)
+           ++count;
+       if (count) {
+           EXPECTED(cursor_down);
+           EXPECTED(cursor_up);
+           EXPECTED(cursor_left);
+           EXPECTED(cursor_right);
+       }
+    }
+}
+
+#define MAX_KP 5
+/*
+ * Do a quick sanity-check for vt100-style keypads to see if the 5-key keypad
+ * is mapped inconsistently.
+ */
+static void
+check_keypad(TERMTYPE2 *tp)
+{
+    char show[80];
+
+    if (VALID_STRING(key_a1) &&
+       VALID_STRING(key_a3) &&
+       VALID_STRING(key_b2) &&
+       VALID_STRING(key_c1) &&
+       VALID_STRING(key_c3)) {
+       char final[MAX_KP + 1];
+       long list[MAX_KP];
+       int increase = 0;
+       int j, k, kk;
+       long last;
+       long test;
+
+       final[0] = keypad_final(key_a1);
+       final[1] = keypad_final(key_a3);
+       final[2] = keypad_final(key_b2);
+       final[3] = keypad_final(key_c1);
+       final[4] = keypad_final(key_c3);
+       final[5] = '\0';
+
+       /* special case: legacy coding using 1,2,3,0,. on the bottom */
+       assert(strlen(final) <= MAX_KP);
+       if (!strcmp(final, "qsrpn"))
+           return;
+
+       list[0] = keypad_index(key_a1);
+       list[1] = keypad_index(key_a3);
+       list[2] = keypad_index(key_b2);
+       list[3] = keypad_index(key_c1);
+       list[4] = keypad_index(key_c3);
+
+       /* check that they're all vt100 keys */
+       for (j = 0; j < MAX_KP; ++j) {
+           if (list[j] < 0) {
+               return;
+           }
+       }
+
+       /* check if they're all in increasing order */
+       for (j = 1; j < MAX_KP; ++j) {
+           if (list[j] > list[j - 1]) {
+               ++increase;
+           }
+       }
+       if (increase != (MAX_KP - 1)) {
+           show[0] = '\0';
+
+           for (j = 0, last = -1; j < MAX_KP; ++j) {
+               for (k = 0, kk = -1, test = 100; k < 5; ++k) {
+                   if (list[k] > last &&
+                       list[k] < test) {
+                       test = list[k];
+                       kk = k;
+                   }
+               }
+               last = test;
+               assert(strlen(show) < (MAX_KP * 4));
+               switch (kk) {
+               case 0:
+                   _nc_STRCAT(show, " ka1", sizeof(show));
+                   break;
+               case 1:
+                   _nc_STRCAT(show, " ka3", sizeof(show));
+                   break;
+               case 2:
+                   _nc_STRCAT(show, " kb2", sizeof(show));
+                   break;
+               case 3:
+                   _nc_STRCAT(show, " kc1", sizeof(show));
+                   break;
+               case 4:
+                   _nc_STRCAT(show, " kc3", sizeof(show));
+                   break;
+               }
+           }
+
+           _nc_warning("vt100 keypad order inconsistent: %s", show);
+       }
+
+    } else if (VALID_STRING(key_a1) ||
+              VALID_STRING(key_a3) ||
+              VALID_STRING(key_b2) ||
+              VALID_STRING(key_c1) ||
+              VALID_STRING(key_c3)) {
+       show[0] = '\0';
+       if (keypad_index(key_a1) >= 0)
+           _nc_STRCAT(show, " ka1", sizeof(show));
+       if (keypad_index(key_a3) >= 0)
+           _nc_STRCAT(show, " ka3", sizeof(show));
+       if (keypad_index(key_b2) >= 0)
+           _nc_STRCAT(show, " kb2", sizeof(show));
+       if (keypad_index(key_c1) >= 0)
+           _nc_STRCAT(show, " kc1", sizeof(show));
+       if (keypad_index(key_c3) >= 0)
+           _nc_STRCAT(show, " kc3", sizeof(show));
+       if (*show != '\0')
+           _nc_warning("vt100 keypad map incomplete:%s", show);
+    }
+
+    /*
+     * These warnings are useful for consistency checks - it is possible that
+     * there are real terminals with mismatches in these
+     */
+    ANDMISSING(key_ic, key_dc);
+}
+
+static void
+check_printer(TERMTYPE2 *tp)
+{
+    (void) tp;
+#if defined(enter_doublewide_mode) && defined(exit_doublewide_mode)
+    PAIRED(enter_doublewide_mode, exit_doublewide_mode);
+#endif
+#if defined(enter_italics_mode) && defined(exit_italics_mode)
+    PAIRED(enter_italics_mode, exit_italics_mode);
+#endif
+#if defined(enter_leftward_mode) && defined(exit_leftward_mode)
+    PAIRED(enter_leftward_mode, exit_leftward_mode);
+#endif
+#if defined(enter_micro_mode) && defined(exit_micro_mode)
+    PAIRED(enter_micro_mode, exit_micro_mode);
+#endif
+#if defined(enter_shadow_mode) && defined(exit_shadow_mode)
+    PAIRED(enter_shadow_mode, exit_shadow_mode);
+#endif
+#if defined(enter_subscript_mode) && defined(exit_subscript_mode)
+    PAIRED(enter_subscript_mode, exit_subscript_mode);
+#endif
+#if defined(enter_superscript_mode) && defined(exit_superscript_mode)
+    PAIRED(enter_superscript_mode, exit_superscript_mode);
+#endif
+#if defined(enter_upward_mode) && defined(exit_upward_mode)
+    PAIRED(enter_upward_mode, exit_upward_mode);
+#endif
+
+#if defined(start_char_set_def) && defined(stop_char_set_def)
+    ANDMISSING(start_char_set_def, stop_char_set_def);
+#endif
+
+    /* if we have a parameterized form, then the non-parameterized is easy */
+#if defined(set_bottom_margin_parm) && defined(set_bottom_margin)
+    ANDMISSING(set_bottom_margin_parm, set_bottom_margin);
+#endif
+#if defined(set_left_margin_parm) && defined(set_left_margin)
+    ANDMISSING(set_left_margin_parm, set_left_margin);
+#endif
+#if defined(set_right_margin_parm) && defined(set_right_margin)
+    ANDMISSING(set_right_margin_parm, set_right_margin);
+#endif
+#if defined(set_top_margin_parm) && defined(set_top_margin)
+    ANDMISSING(set_top_margin_parm, set_top_margin);
+#endif
+
+#if defined(parm_down_micro) && defined(micro_down)
+    ANDMISSING(parm_down_micro, micro_down);
+#endif
+#if defined(parm_left_micro) && defined(micro_left)
+    ANDMISSING(parm_left_micro, micro_left);
+#endif
+#if defined(parm_right_micro) && defined(micro_right)
+    ANDMISSING(parm_right_micro, micro_right);
+#endif
+#if defined(parm_up_micro) && defined(micro_up)
+    ANDMISSING(parm_up_micro, micro_up);
+#endif
+}
+
+#if NCURSES_XNAMES
+static bool
+uses_SGR_39_49(const char *value)
+{
+    return (strstr(value, "39;49") != 0
+           || strstr(value, "49;39") != 0);
+}
+
+/*
+ * Check consistency of termcap extensions related to "screen".
+ */
+static void
+check_screen(TERMTYPE2 *tp)
+{
+    if (_nc_user_definable) {
+       int have_XT = tigetflag("XT");
+       int have_XM = tigetflag("XM");
+       int have_bce = back_color_erase;
+       bool have_kmouse = FALSE;
+       bool use_sgr_39_49 = FALSE;
+       char *name = _nc_first_name(tp->term_names);
+       bool is_screen = !strncmp(name, "screen", 6);
+       bool screen_base = (is_screen
+                           && strchr(name, '.') == 0);
+
+       if (!VALID_BOOLEAN(have_bce)) {
+           have_bce = FALSE;
+       }
+       if (!VALID_BOOLEAN(have_XM)) {
+           have_XM = FALSE;
+       }
+       if (!VALID_BOOLEAN(have_XT)) {
+           have_XT = FALSE;
+       }
+       if (VALID_STRING(key_mouse)) {
+           have_kmouse = !strcmp("\033[M", key_mouse);
+       }
+       if (VALID_STRING(orig_colors)) {
+           use_sgr_39_49 = uses_SGR_39_49(orig_colors);
+       } else if (VALID_STRING(orig_pair)) {
+           use_sgr_39_49 = uses_SGR_39_49(orig_pair);
+       }
+
+       if (have_XM && have_XT) {
+           _nc_warning("screen's XT capability conflicts with XM");
+       } else if (have_XT && screen_base) {
+           _nc_warning("screen's \"screen\" entries should not have XT set");
+       } else if (have_XT) {
+           if (!have_kmouse && is_screen) {
+               if (VALID_STRING(key_mouse)) {
+                   _nc_warning("value of kmous inconsistent with screen's usage");
+               } else {
+                   _nc_warning("expected kmous capability with XT");
+               }
+           }
+           if (!have_bce && max_colors > 0)
+               _nc_warning("expected bce capability with XT");
+           if (!use_sgr_39_49 && have_bce && max_colors > 0)
+               _nc_warning("expected orig_colors capability with XT to have 39/49 parameters");
+           if (VALID_STRING(to_status_line))
+               _nc_warning("\"tsl\" capability is redundant, given XT");
+       } else {
+           if (have_kmouse
+               && !have_XM
+               && !screen_base && strchr(name, '+') == 0) {
+               _nc_warning("expected XT to be set, given kmous");
+           }
+       }
+    }
+}
+#else
+#define check_screen(tp)       /* nothing */
+#endif
+
+/*
+ * Returns the expected number of parameters for the given capability.
+ */
+static int
+expected_params(const char *name)
+{
+#define DATA(name,count) { { name }, count }
+    /* *INDENT-OFF* */
+    static const struct {
+       const char name[9];
+       int count;
+    } table[] = {
+       DATA( "S0",             1 ),    /* 'screen' extension */
+       DATA( "birep",          2 ),
+       DATA( "chr",            1 ),
+       DATA( "colornm",        1 ),
+       DATA( "cpi",            1 ),
+       DATA( "csnm",           1 ),
+       DATA( "csr",            2 ),
+       DATA( "cub",            1 ),
+       DATA( "cud",            1 ),
+       DATA( "cuf",            1 ),
+       DATA( "cup",            2 ),
+       DATA( "cuu",            1 ),
+       DATA( "cvr",            1 ),
+       DATA( "cwin",           5 ),
+       DATA( "dch",            1 ),
+       DATA( "defc",           3 ),
+       DATA( "dial",           1 ),
+       DATA( "dispc",          1 ),
+       DATA( "dl",             1 ),
+       DATA( "ech",            1 ),
+       DATA( "getm",           1 ),
+       DATA( "hpa",            1 ),
+       DATA( "ich",            1 ),
+       DATA( "il",             1 ),
+       DATA( "indn",           1 ),
+       DATA( "initc",          4 ),
+       DATA( "initp",          7 ),
+       DATA( "lpi",            1 ),
+       DATA( "mc5p",           1 ),
+       DATA( "mrcup",          2 ),
+       DATA( "mvpa",           1 ),
+       DATA( "pfkey",          2 ),
+       DATA( "pfloc",          2 ),
+       DATA( "pfx",            2 ),
+       DATA( "pfxl",           3 ),
+       DATA( "pln",            2 ),
+       DATA( "qdial",          1 ),
+       DATA( "rcsd",           1 ),
+       DATA( "rep",            2 ),
+       DATA( "rin",            1 ),
+       DATA( "sclk",           3 ),
+       DATA( "scp",            1 ),
+       DATA( "scs",            1 ),
+       DATA( "scsd",           2 ),
+       DATA( "setab",          1 ),
+       DATA( "setaf",          1 ),
+       DATA( "setb",           1 ),
+       DATA( "setcolor",       1 ),
+       DATA( "setf",           1 ),
+       DATA( "sgr",            9 ),
+       DATA( "sgr1",           6 ),
+       DATA( "slength",        1 ),
+       DATA( "slines",         1 ),
+       DATA( "smgbp",          1 ),    /* 2 if smgtp is not given */
+       DATA( "smglp",          1 ),
+       DATA( "smglr",          2 ),
+       DATA( "smgrp",          1 ),
+       DATA( "smgtb",          2 ),
+       DATA( "smgtp",          1 ),
+       DATA( "tsl",            1 ),
+       DATA( "u6",             -1 ),
+       DATA( "vpa",            1 ),
+       DATA( "wind",           4 ),
+       DATA( "wingo",          1 ),
+    };
+    /* *INDENT-ON* */
+#undef DATA
+
+    unsigned n;
+    int result = 0;            /* function-keys, etc., use none */
+
+    for (n = 0; n < SIZEOF(table); n++) {
+       if (!strcmp(name, table[n].name)) {
+           result = table[n].count;
+           break;
+       }
+    }
+
+    return result;
+}
+
+/*
+ * Check for user-capabilities that happen to be used in ncurses' terminal
+ * database.
+ */
+#if NCURSES_XNAMES
+static struct user_table_entry const *
+lookup_user_capability(const char *name)
+{
+    struct user_table_entry const *result = 0;
+    if (*name != 'k') {
+       result = _nc_find_user_entry(name);
+    }
+    return result;
+}
+#endif
+
+/*
+ * If a given name is likely to be a user-capability, return the number of
+ * parameters it would be used with.  If not, return -1.
+ *
+ * ncurses assumes that u6 could be used for getting the cursor-position, but
+ * that is not implemented.  Make a special case for that, to quiet needless
+ * warnings.
+ *
+ * The other string-capability extensions (see terminfo.src) which could have
+ * parameters such as "Ss", "%u", are not used by ncurses.  But we check those
+ * anyway, to validate the terminfo database.
+ */
+static int
+is_user_capability(const char *name)
+{
+    int result = -1;
+    if (name[0] == 'u' &&
+       (name[1] >= '0' && name[1] <= '9') &&
+       name[2] == '\0') {
+       result = (name[1] == '6') ? 2 : 0;
+    }
+#if NCURSES_XNAMES
+    else if (using_extensions) {
+       struct user_table_entry const *p = lookup_user_capability(name);
+       if (p != 0) {
+           result = (int) p->ute_argc;
+       }
+    }
+#endif
+    return result;
+}
+
+/*
+ * Make a quick sanity check for the parameters which are used in the given
+ * strings.  If there are no "%p" tokens, then there should be no other "%"
+ * markers.
+ */
+static void
+check_params(TERMTYPE2 *tp, const char *name, char *value, int extended)
+{
+    int expected = expected_params(name);
+    int actual = 0;
+    int n;
+    bool params[1 + NUM_PARM];
+    char *s = value;
+
+#ifdef set_top_margin_parm
+    if (!strcmp(name, "smgbp")
+       && set_top_margin_parm == 0)
+       expected = 2;
+#endif
+
+    for (n = 0; n <= NUM_PARM; n++)
+       params[n] = FALSE;
+
+    while (*s != 0) {
+       if (*s == '%') {
+           if (*++s == '\0') {
+               _nc_warning("expected character after %% in %s", name);
+               break;
+           } else if (*s == 'p') {
+               if (*++s == '\0' || !isdigit((int) *s)) {
+                   _nc_warning("expected digit after %%p in %s", name);
+                   return;
+               } else {
+                   n = (*s - '0');
+                   if (n > actual)
+                       actual = n;
+                   params[n] = TRUE;
+               }
+           }
+       }
+       s++;
+    }
+
+#if NCURSES_XNAMES
+    if (extended) {
+       int check = is_user_capability(name);
+       if (check != actual && (check >= 0 && actual >= 0)) {
+           _nc_warning("extended %s capability has %d parameters, expected %d",
+                       name, actual, check);
+       } else if (debug_level > 1) {
+           _nc_warning("extended %s capability has %d parameters, as expected",
+                       name, actual);
+       }
+       expected = actual;
+    }
+#else
+    (void) extended;
+#endif
+
+    if (params[0]) {
+       _nc_warning("%s refers to parameter 0 (%%p0), which is not allowed", name);
+    }
+    if (value == set_attributes || expected < 0) {
+       ;
+    } else if (expected != actual) {
+       _nc_warning("%s uses %d parameters, expected %d", name,
+                   actual, expected);
+       for (n = 1; n < actual; n++) {
+           if (!params[n])
+               _nc_warning("%s omits parameter %d", name, n);
+       }
+    }
+
+    /*
+     * Counting "%p" markers does not account for termcap expressions which
+     * may not have been fully translated.  Also, tparm does its own analysis.
+     * Report differences here.
+     */
+    if (actual >= 0) {
+       char *p_is_s[NUM_PARM];
+       int popcount;
+       int analyzed = _nc_tparm_analyze(value, p_is_s, &popcount);
+       if (analyzed < popcount) {
+           analyzed = popcount;
+       }
+       if (actual != analyzed && expected != analyzed) {
+#if NCURSES_XNAMES
+           int user_cap = is_user_capability(name);
+           if ((user_cap == analyzed) && using_extensions) {
+               ;               /* ignore */
+           } else if (user_cap >= 0) {
+               _nc_warning("tparm will use %d parameters for %s, expected %d",
+                           analyzed, name, user_cap);
+           } else
+#endif
+           {
+               _nc_warning("tparm analyzed %d parameters for %s, expected %d",
+                           analyzed, name, actual);
+           }
+       }
+    }
+}
+
+static bool
+line_capability(const char *name)
+{
+    bool result = FALSE;
+    static const char *table[] =
+    {
+       "csr",                  /* change_scroll_region          */
+       "clear",                /* clear_screen                  */
+       "ed",                   /* clr_eos                       */
+       "cwin",                 /* create_window                 */
+       "cup",                  /* cursor_address                */
+       "cud1",                 /* cursor_down                   */
+       "home",                 /* cursor_home                   */
+       "mrcup",                /* cursor_mem_address            */
+       "ll",                   /* cursor_to_ll                  */
+       "cuu1",                 /* cursor_up                     */
+       "dl1",                  /* delete_line                   */
+       "hd",                   /* down_half_line                */
+       "flash",                /* flash_screen                  */
+       "ff",                   /* form_feed                     */
+       "il1",                  /* insert_line                   */
+       "nel",                  /* newline                       */
+       "dl",                   /* parm_delete_line              */
+       "cud",                  /* parm_down_cursor              */
+       "indn",                 /* parm_index                    */
+       "il",                   /* parm_insert_line              */
+       "rin",                  /* parm_rindex                   */
+       "cuu",                  /* parm_up_cursor                */
+       "mc0",                  /* print_screen                  */
+       "vpa",                  /* row_address                   */
+       "ind",                  /* scroll_forward                */
+       "ri",                   /* scroll_reverse                */
+       "hu",                   /* up_half_line                  */
+    };
+    size_t n;
+    for (n = 0; n < SIZEOF(table); ++n) {
+       if (!strcmp(name, table[n])) {
+           result = TRUE;
+           break;
+       }
+    }
+    return result;
+}
+
+/*
+ * Check for DEC VT100 private mode for reverse video.
+ */
+static const char *
+skip_DECSCNM(const char *value, int *flag)
+{
+    *flag = -1;
+    if (value != 0) {
+       int skip = csi_length(value);
+       if (skip > 0 &&
+           value[skip++] == '?' &&
+           value[skip++] == '5') {
+           if (value[skip] == 'h') {
+               *flag = 1;
+           } else if (value[skip] == 'l') {
+               *flag = 0;
+           }
+           value += skip + 1;
+       }
+    }
+    return value;
+}
+
+static void
+check_delays(TERMTYPE2 *tp, const char *name, const char *value)
+{
+    const char *p, *q;
+    const char *first = 0;
+    const char *last = 0;
+
+    for (p = value; *p != '\0'; ++p) {
+       if (p[0] == '$' && p[1] == '<') {
+           const char *base = p + 2;
+           const char *mark = 0;
+           bool maybe = TRUE;
+           bool mixed = FALSE;
+           int proportional = 0;
+           int mandatory = 0;
+
+           first = p;
+
+           for (q = base; *q != '\0'; ++q) {
+               if (*q == '>') {
+                   if (mark == 0)
+                       mark = q;
+                   break;
+               } else if (*q == '*' || *q == '/') {
+                   if (*q == '*')
+                       ++proportional;
+                   if (*q == '/')
+                       ++mandatory;
+                   if (mark == 0)
+                       mark = q;
+               } else if (!(isalnum(UChar(*q)) || strchr("+-.", *q) != 0)) {
+                   maybe = FALSE;
+                   break;
+               } else if (proportional || mandatory) {
+                   mixed = TRUE;
+               }
+           }
+           last = *q ? (q + 1) : q;
+           if (*q == '\0') {
+               maybe = FALSE;  /* just an isolated "$<" */
+           } else if (maybe) {
+               float check_f;
+               char check_c;
+               int rc = sscanf(base, "%f%c", &check_f, &check_c);
+               if ((rc != 2) || (check_c != *mark) || mixed) {
+                   _nc_warning("syntax error in %s delay '%.*s'", name,
+                               (int) (q - base), base);
+               } else if (*name == 'k') {
+                   _nc_warning("function-key %s has delay", name);
+               } else if (proportional && !line_capability(name)) {
+                   _nc_warning("non-line capability using proportional delay: %s", name);
+               } else if (!xon_xoff &&
+                          !mandatory &&
+                          strchr(_nc_first_name(tp->term_names), '+') == 0) {
+                   _nc_warning("%s in %s is used since no xon/xoff",
+                               (proportional
+                                ? "proportional delay"
+                                : "delay"),
+                               name);
+               }
+           } else {
+               p = q - 1;      /* restart scan */
+           }
+       }
+    }
+
+    if (!strcmp(name, "flash") ||
+       !strcmp(name, "beep")) {
+
+       if (first != 0) {
+           if (first == value || *last == 0) {
+               /*
+                * Delay is on one end or the other.
+                */
+               _nc_warning("expected delay embedded within %s", name);
+           }
+       } else {
+           int flag;
+
+           /*
+            * Check for missing delay when using VT100 reverse-video.
+            * A real VT100 might not need this, but terminal emulators do.
+            */
+           if ((p = skip_DECSCNM(value, &flag)) != 0 &&
+               flag > 0 &&
+               (q = skip_DECSCNM(p, &flag)) != 0 &&
+               flag == 0) {
+               _nc_warning("expected a delay in %s", name);
+           }
+       }
+    }
+}
+
+static char *
+check_1_infotocap(const char *name, NCURSES_CONST char *value, int count)
+{
+    int k;
+    int ignored;
+    long numbers[1 + NUM_PARM];
+    char *strings[1 + NUM_PARM];
+    char *p_is_s[NUM_PARM];
+    char *result;
+    char blob[NUM_PARM * 10];
+    char *next = blob;
+
+    *next++ = '\0';
+    for (k = 1; k <= NUM_PARM; k++) {
+       numbers[k] = count;
+       _nc_SPRINTF(next,
+                   _nc_SLIMIT(sizeof(blob) - (size_t) (next - blob))
+                   "XYZ%d", count);
+       strings[k] = next;
+       next += strlen(next) + 1;
+    }
+
+    switch (tparm_type(name)) {
+    case Num_Str:
+       result = TPARM_2(value, numbers[1], strings[2]);
+       break;
+    case Num_Str_Str:
+       result = TPARM_3(value, numbers[1], strings[2], strings[3]);
+       break;
+    case Numbers:
+#define myParam(n) numbers[n]
+       result = TIPARM_9(value,
+                         myParam(1),
+                         myParam(2),
+                         myParam(3),
+                         myParam(4),
+                         myParam(5),
+                         myParam(6),
+                         myParam(7),
+                         myParam(8),
+                         myParam(9));
+#undef myParam
+       break;
+    default:
+       (void) _nc_tparm_analyze(value, p_is_s, &ignored);
+#define myParam(n) (p_is_s[n - 1] != 0 ? ((TPARM_ARG) strings[n]) : numbers[n])
+       result = TPARM_9(value,
+                        myParam(1),
+                        myParam(2),
+                        myParam(3),
+                        myParam(4),
+                        myParam(5),
+                        myParam(6),
+                        myParam(7),
+                        myParam(8),
+                        myParam(9));
+#undef myParam
+       break;
+    }
+    return strdup(result);
+}
+
+#define IsDelay(ch) ((ch) == '.' || isdigit(UChar(ch)))
+
+static const char *
+parse_delay_value(const char *src, double *delays, int *always)
+{
+    int star = 0;
+
+    *delays = 0.0;
+    if (always)
+       *always = 0;
+
+    while (isdigit(UChar(*src))) {
+       (*delays) = (*delays) * 10 + (*src++ - '0');
+    }
+    if (*src == '.') {
+       int gotdot = 1;
+
+       ++src;
+       while (isdigit(UChar(*src))) {
+           gotdot *= 10;
+           (*delays) += (*src++ - '0') / gotdot;
+       }
+    }
+    while (*src == '*' || *src == '/') {
+       if (always == 0 && *src == '/')
+           break;
+       if (*src++ == '*') {
+           star = 1;
+       } else {
+           *always = 1;
+       }
+    }
+    if (star)
+       *delays = -(*delays);
+    return src;
+}
+
+static const char *
+parse_ti_delay(const char *ti, double *delays)
+{
+    *delays = 0.0;
+    while (*ti != '\0') {
+       if (*ti == '\\') {
+           ++ti;
+       }
+       if (ti[0] == '$'
+           && ti[1] == '<'
+           && IsDelay(UChar(ti[2]))) {
+           int ignored;
+           const char *last = parse_delay_value(ti + 2, delays, &ignored);
+           if (*last == '>') {
+               ti = last;
+           }
+       } else {
+           ++ti;
+       }
+    }
+    return ti;
+}
+
+static const char *
+parse_tc_delay(const char *tc, double *delays)
+{
+    return parse_delay_value(tc, delays, (int *) 0);
+}
+
+/*
+ * Compare terminfo- and termcap-strings, factoring out delays.
+ */
+static bool
+same_ti_tc(const char *ti, const char *tc, bool * embedded)
+{
+    bool same = TRUE;
+    double ti_delay = 0.0;
+    double tc_delay = 0.0;
+    const char *ti_last;
+
+    *embedded = FALSE;
+    ti_last = parse_ti_delay(ti, &ti_delay);
+    tc = parse_tc_delay(tc, &tc_delay);
+
+    while ((ti < ti_last) && *tc) {
+       if (*ti == '\\' && ispunct(UChar(ti[1]))) {
+           ++ti;
+           if ((*ti == '^') && !strncmp(tc, "\\136", 4)) {
+               ti += 1;
+               tc += 4;
+               continue;
+           }
+       } else if (ti[0] == '$' && ti[1] == '<') {
+           double no_delay;
+           const char *ss = parse_ti_delay(ti, &no_delay);
+           if (ss != ti) {
+               *embedded = TRUE;
+               ti = ss;
+               continue;
+           }
+       }
+       if (*tc == '\\' && ispunct(UChar(tc[1]))) {
+           ++tc;
+       }
+       if (*ti++ != *tc++) {
+           same = FALSE;
+           break;
+       }
+    }
+
+    if (*embedded) {
+       if (same) {
+           same = FALSE;
+       } else {
+           *embedded = FALSE;  /* report only one problem */
+       }
+    }
+
+    return same;
+}
+
+/*
+ * Check terminfo to termcap translation.
+ */
+static void
+check_infotocap(TERMTYPE2 *tp, int i, const char *value)
+{
+    const char *name = ExtStrname(tp, i, strnames);
+    int params = ((i < (int) SIZEOF(parametrized))
+                 ? parametrized[i]
+                 : ((*value == 'k')
+                    ? 0
+                    : has_params(value)));
+    int to_char = 0;
+    char *ti_value;
+    char *tc_value;
+    bool embedded;
+
+    assert(SIZEOF(parametrized) == STRCOUNT);
+    if ((ti_value = _nc_tic_expand(value, TRUE, to_char)) == ABSENT_STRING) {
+       _nc_warning("tic-expansion of %s failed", name);
+    } else if ((tc_value = _nc_infotocap(name, ti_value, params)) == ABSENT_STRING) {
+       _nc_warning("tic-conversion of %s failed", name);
+    } else if (params > 0) {
+       int limit = 5;
+       int count;
+       bool first = TRUE;
+
+       if (!strcmp(name, "setf")
+           || !strcmp(name, "setb")
+           || !strcmp(name, "setaf")
+           || !strcmp(name, "setab")) {
+           if ((limit = max_colors) > 16)
+               limit = 16;
+       }
+       for (count = 0; count < limit; ++count) {
+           char *ti_check = check_1_infotocap(name, ti_value, count);
+           char *tc_check = check_1_infotocap(name, tc_value, count);
+
+           if (strcmp(ti_check, tc_check)) {
+               if (first) {
+                   fprintf(stderr, "check_infotocap(%s)\n", name);
+                   fprintf(stderr, "...ti '%s'\n", ti_value);
+                   fprintf(stderr, "...tc '%s'\n", tc_value);
+                   first = FALSE;
+               }
+               _nc_warning("tparm-conversion of %s(%d) differs between\n\tterminfo %s\n\ttermcap  %s",
+                           name, count, ti_check, tc_check);
+           }
+           free(ti_check);
+           free(tc_check);
+       }
+    } else if (params == 0 && !same_ti_tc(ti_value, tc_value, &embedded)) {
+       if (embedded) {
+           _nc_warning("termcap equivalent of %s cannot use embedded delay", name);
+       } else {
+           _nc_warning("tic-conversion of %s changed value\n\tfrom %s\n\tto   %s",
+                       name, ti_value, tc_value);
+       }
+    }
+}
+
+static char *
+skip_delay(char *s)
+{
+    while (*s == '/' || isdigit(UChar(*s)))
+       ++s;
+    return s;
+}
+
+/*
+ * Skip a delay altogether, e.g., when comparing a simple string to sgr,
+ * the latter may have a worst-case delay on the end.
+ */
+static char *
+ignore_delays(char *s)
+{
+    int delaying = 0;
+
+    do {
+       switch (*s) {
+       case '$':
+           if (delaying == 0)
+               delaying = 1;
+           break;
+       case '<':
+           if (delaying == 1)
+               delaying = 2;
+           break;
+       case '\0':
+           delaying = 0;
+           break;
+       default:
+           if (delaying) {
+               s = skip_delay(s);
+               if (*s == '>')
+                   ++s;
+               delaying = 0;
+           }
+           break;
+       }
+       if (delaying)
+           ++s;
+    } while (delaying);
+    return s;
+}
+
+#define DATA(name) { #name }
+static const char sgr_names[][11] =
+{
+    DATA(none),
+    DATA(standout),
+    DATA(underline),
+    DATA(reverse),
+    DATA(blink),
+    DATA(dim),
+    DATA(bold),
+    DATA(invis),
+    DATA(protect),
+    DATA(altcharset),
+    ""
+};
+#undef DATA
+
+/*
+ * An sgr string may contain several settings other than the one we're
+ * interested in, essentially sgr0 + rmacs + whatever.  As long as the
+ * "whatever" is contained in the sgr string, that is close enough for our
+ * sanity check.
+ */
+static bool
+similar_sgr(int num, char *a, char *b)
+{
+    char *base_a = a;
+    char *base_b = b;
+    int delaying = 0;
+
+    while (*b != 0) {
+       while (*a != *b) {
+           if (*a == 0) {
+               if (num < 0) {
+                   ;
+               } else if (b[0] == '$'
+                          && b[1] == '<') {
+                   _nc_warning("did not find delay %s", _nc_visbuf(b));
+               } else {
+                   _nc_warning("checking sgr(%s) %s\n\tcompare to %s\n\tunmatched %s",
+                               sgr_names[num], _nc_visbuf2(1, base_a),
+                               _nc_visbuf2(2, base_b),
+                               _nc_visbuf2(3, b));
+               }
+               return FALSE;
+           } else if (delaying) {
+               a = skip_delay(a);
+               b = skip_delay(b);
+           } else if ((*b == '0' || (*b == ';')) && *a == 'm') {
+               b++;
+           } else {
+               a++;
+           }
+       }
+       switch (*a) {
+       case '$':
+           if (delaying == 0)
+               delaying = 1;
+           break;
+       case '<':
+           if (delaying == 1)
+               delaying = 2;
+           break;
+       default:
+           delaying = 0;
+           break;
+       }
+       a++;
+       b++;
+    }
+    /* ignore delays on the end of the string */
+    a = ignore_delays(a);
+    return ((num != 0) || (*a == 0));
+}
+
+static char *
+check_sgr(TERMTYPE2 *tp, char *zero, int num, char *cap, const char *name)
+{
+    char *test;
+
+    _nc_tparm_err = 0;
+    test = TIPARM_9(set_attributes,
+                   num == 1,
+                   num == 2,
+                   num == 3,
+                   num == 4,
+                   num == 5,
+                   num == 6,
+                   num == 7,
+                   num == 8,
+                   num == 9);
+    if (test != 0) {
+       if (PRESENT(cap)) {
+           if (!similar_sgr(num, test, cap)) {
+               _nc_warning("%s differs from sgr(%d)\n\t%s=%s\n\tsgr(%d)=%s",
+                           name, num,
+                           name, _nc_visbuf2(1, cap),
+                           num, _nc_visbuf2(2, test));
+           }
+       } else if (_nc_capcmp(test, zero)) {
+           _nc_warning("sgr(%d) present, but not %s", num, name);
+       }
+    } else if (PRESENT(cap)) {
+       _nc_warning("sgr(%d) missing, but %s present", num, name);
+    }
+    if (_nc_tparm_err)
+       _nc_warning("stack error in sgr(%d) string", num);
+    return test;
+}
+
+#define CHECK_SGR(num,name) check_sgr(tp, zero, num, name, #name)
+
+#ifdef TRACE
+/*
+ * If tic is compiled with TRACE, we'll be able to see the output from the
+ * DEBUG() macro.  But since it doesn't use traceon(), it always goes to
+ * the standard error.  Use this function to make it simpler to follow the
+ * resulting debug traces.
+ */
+static void
+show_where(unsigned level)
+{
+    if (_nc_tracing >= DEBUG_LEVEL(level)) {
+       char my_name[MAX_NAME_SIZE];
+       _nc_get_type(my_name);
+       _tracef("\"%s\", line %d, '%s'",
+               _nc_get_source(),
+               _nc_curr_line, my_name);
+    }
+}
+
+#else
+#define show_where(level)      /* nothing */
+#endif
+
+typedef struct {
+    int keycode;
+    const char *name;
+    const char *value;
+} NAME_VALUE;
+
+static NAME_VALUE *
+get_fkey_list(TERMTYPE2 *tp)
+{
+    NAME_VALUE *result = typeMalloc(NAME_VALUE, NUM_STRINGS(tp) + 1);
+    const struct tinfo_fkeys *all_fkeys = _nc_tinfo_fkeys;
+    int used = 0;
+    unsigned j;
+
+    if (result == 0)
+       failed("get_fkey_list");
+
+    for (j = 0; all_fkeys[j].code; j++) {
+       char *a = tp->Strings[all_fkeys[j].offset];
+       if (VALID_STRING(a)) {
+           result[used].keycode = (int) all_fkeys[j].code;
+           result[used].name = strnames[all_fkeys[j].offset];
+           result[used].value = a;
+           ++used;
+       }
+    }
+#if NCURSES_XNAMES
+    for (j = STRCOUNT; j < NUM_STRINGS(tp); ++j) {
+       const char *name = ExtStrname(tp, (int) j, strnames);
+       if (*name == 'k') {
+           result[used].keycode = -1;
+           result[used].name = name;
+           result[used].value = tp->Strings[j];
+           ++used;
+       }
+    }
+#endif
+    result[used].keycode = 0;
+    return result;
+}
+
+static void
+show_fkey_name(NAME_VALUE * data)
+{
+    if (data->keycode > 0) {
+       fprintf(stderr, " %s", keyname(data->keycode));
+       fprintf(stderr, " (capability \"%s\")", data->name);
+    } else {
+       fprintf(stderr, " capability \"%s\"", data->name);
+    }
+}
+
+/*
+ * A terminal entry may contain more than one keycode assigned to a given
+ * string (e.g., KEY_END and KEY_LL).  But curses will only return one (the
+ * last one assigned).
+ */
+static void
+check_conflict(TERMTYPE2 *tp)
+{
+    bool conflict = FALSE;
+    unsigned j, k;
+
+    if (!(_nc_syntax == SYN_TERMCAP && capdump)) {
+       char *check = calloc((size_t) (NUM_STRINGS(tp) + 1), sizeof(char));
+       NAME_VALUE *given = get_fkey_list(tp);
+
+       if (check == 0)
+           failed("check_conflict");
+
+       for (j = 0; given[j].keycode; ++j) {
+           const char *a = given[j].value;
+           bool first = TRUE;
+
+           if (!VALID_STRING(a))
+               continue;
+
+           for (k = j + 1; given[k].keycode; k++) {
+               const char *b = given[k].value;
+
+               if (!VALID_STRING(b))
+                   continue;
+               if (check[k])
+                   continue;
+
+               if (!_nc_capcmp(a, b)) {
+                   check[j] = 1;
+                   check[k] = 1;
+                   if (first) {
+                       if (!conflict) {
+                           _nc_warning("conflicting key definitions (using the last)");
+                           conflict = TRUE;
+                       }
+                       fprintf(stderr, "...");
+                       show_fkey_name(given + j);
+                       fprintf(stderr, " is the same as");
+                       show_fkey_name(given + k);
+                       first = FALSE;
+                   } else {
+                       fprintf(stderr, ", ");
+                       show_fkey_name(given + k);
+                   }
+               }
+           }
+           if (!first)
+               fprintf(stderr, "\n");
+       }
+#if NCURSES_XNAMES
+       if (using_extensions) {
+           /* *INDENT-OFF* */
+           static struct {
+               const char *xcurses;
+               const char *shifted;
+           } table[] = {
+               { "kDC",  NULL },
+               { "kDN",  "kind" },
+               { "kEND", NULL },
+               { "kHOM", NULL },
+               { "kLFT", NULL },
+               { "kNXT", NULL },
+               { "kPRV", NULL },
+               { "kRIT", NULL },
+               { "kUP",  "kri" },
+               { NULL,   NULL },
+           };
+           /* *INDENT-ON* */
+           /*
+            * SVr4 curses defines the "xcurses" names listed above except for
+            * the special cases in the "shifted" column.  When using these
+            * names for xterm's extensions, that was confusing, and resulted
+            * in adding extended capabilities with "2" (shift) suffix.  This
+            * check warns about unnecessary use of extensions for this quirk.
+            */
+           for (j = 0; given[j].keycode; ++j) {
+               const char *find = given[j].name;
+               int value;
+               char ch;
+
+               if (!VALID_STRING(given[j].value))
+                   continue;
+
+               for (k = 0; table[k].xcurses; ++k) {
+                   const char *test = table[k].xcurses;
+                   size_t size = strlen(test);
+
+                   if (!strncmp(find, test, size) && strcmp(find, test)) {
+                       switch (sscanf(find + size, "%d%c", &value, &ch)) {
+                       case 1:
+                           if (value == 2) {
+                               _nc_warning("expected '%s' rather than '%s'",
+                                           (table[k].shifted
+                                            ? table[k].shifted
+                                            : test), find);
+                           } else if (value < 2 || value > 15) {
+                               _nc_warning("expected numeric 2..15 '%s'", find);
+                           }
+                           break;
+                       default:
+                           _nc_warning("expected numeric suffix for '%s'", find);
+                           break;
+                       }
+                       break;
+                   }
+               }
+           }
+       }
+#endif
+       free(given);
+       free(check);
+    }
+}
+
+/*
+ * Exiting a video mode should not duplicate sgr0
+ */
+static void
+check_exit_attribute(const char *name, char *test, char *trimmed, char *untrimmed)
+{
+    if (VALID_STRING(test) && (trimmed != 0)) {
+       if (similar_sgr(-1, trimmed, test) ||
+           similar_sgr(-1, untrimmed, test)) {
+           _nc_warning("%s matches exit_attribute_mode", name);
+       }
+    }
+}
+
+/*
+ * Returns true if the string looks like a standard SGR string.
+ */
+static bool
+is_sgr_string(char *value)
+{
+    bool result = FALSE;
+
+    if (VALID_STRING(value)) {
+       int skip = csi_length(value);
+
+       if (skip) {
+           int ch;
+
+           result = TRUE;
+           value += skip;
+           while ((ch = UChar(*value++)) != '\0') {
+               if (isdigit(ch) || ch == ';') {
+                   ;
+               } else if (ch == 'm' && *value == '\0') {
+                   ;
+               } else {
+                   result = FALSE;
+                   break;
+               }
+           }
+       }
+    }
+    return result;
+}
+
+/*
+ * Check if the given capability contains a given SGR attribute.
+ */
+static void
+check_sgr_param(TERMTYPE2 *tp, int code, const char *name, char *value)
+{
+    if (VALID_STRING(value)) {
+       int ncv = ((code != 0) ? (1 << (code - 1)) : 0);
+       char *test = tgoto(value, 0, 0);
+       if (is_sgr_string(test)) {
+           int param = 0;
+           int count = 0;
+           int skips = 0;
+           int color = (value == set_a_foreground ||
+                        value == set_a_background ||
+                        value == set_foreground ||
+                        value == set_background);
+           while (*test != 0) {
+               if (isdigit(UChar(*test))) {
+                   param = 10 * param + (*test - '0');
+                   ++count;
+               } else {
+                   if (count) {
+                       /*
+                        * Avoid unnecessary warning for xterm 256color codes.
+                        */
+                       if (color && (param == 38 || param == 48))
+                           skips = 3;
+                       if ((skips-- <= 0) && (param == code))
+                           break;
+                   }
+                   count = 0;
+                   param = 0;
+               }
+               ++test;
+           }
+           if (count != 0 && param == code) {
+               if (code == 0 ||
+                   no_color_video < 0 ||
+                   !(no_color_video & ncv)) {
+                   _nc_warning("\"%s\" SGR-attribute used in %s",
+                               sgr_names[code],
+                               name);
+               }
+           }
+       }
+    }
+}
+
+#if NCURSES_XNAMES
+static int
+standard_type(const char *name)
+{
+    int result = -1;
+    const struct name_table_entry *np;
+
+    if ((np = _nc_find_entry(name, _nc_get_hash_table(0))) != 0) {
+       result = np->nte_type;
+    }
+    return result;
+}
+
+static const char *
+name_of_type(int type)
+{
+    const char *result = "unknown";
+    switch (type) {
+    case BOOLEAN:
+       result = "boolean";
+       break;
+    case NUMBER:
+       result = "number";
+       break;
+    case STRING:
+       result = "string";
+       break;
+    }
+    return result;
+}
+
+static void
+check_user_capability_type(const char *name, int actual)
+{
+    if (lookup_user_capability(name) == 0) {
+       int expected = standard_type(name);
+       if (expected >= 0) {
+           _nc_warning("expected %s to be %s, but actually %s",
+                       name,
+                       name_of_type(actual),
+                       name_of_type(expected)
+               );
+       } else if (*name != 'k') {
+           _nc_warning("undocumented %s capability %s",
+                       name_of_type(actual),
+                       name);
+       }
+    }
+}
+#endif
+
+/* other sanity-checks (things that we don't want in the normal
+ * logic that reads a terminfo entry)
+ */
+static void
+check_termtype(TERMTYPE2 *tp, bool literal)
+{
+    unsigned j;
+
+    check_conflict(tp);
+
+    for_each_string(j, tp) {
+       char *a = tp->Strings[j];
+       if (VALID_STRING(a)) {
+           const char *name = ExtStrname(tp, (int) j, strnames);
+           /*
+            * If we expect parameters, or if there might be parameters,
+            * check for consistent number of parameters.
+            */
+           if (j >= SIZEOF(parametrized) ||
+               is_user_capability(name) >= 0 ||
+               parametrized[j] > 0) {
+               check_params(tp, name, a, (j >= STRCOUNT));
+           }
+           check_delays(tp, ExtStrname(tp, (int) j, strnames), a);
+           if (capdump) {
+               check_infotocap(tp, (int) j, a);
+           }
+       }
+    }
+#if NCURSES_XNAMES
+    /* in extended mode, verify that each extension is expected type */
+    for_each_ext_boolean(j, tp) {
+       check_user_capability_type(ExtBoolname(tp, (int) j, strnames), BOOLEAN);
+    }
+    for_each_ext_number(j, tp) {
+       check_user_capability_type(ExtNumname(tp, (int) j, strnames), NUMBER);
+    }
+    for_each_ext_string(j, tp) {
+       check_user_capability_type(ExtStrname(tp, (int) j, strnames), STRING);
+    }
+#endif /* NCURSES_XNAMES */
+
+    check_acs(tp);
+    check_colors(tp);
+    check_cursor(tp);
+    check_keypad(tp);
+    check_printer(tp);
+    check_screen(tp);
+
+    /*
+     * These are probably both or none.
+     */
+    PAIRED(parm_index, parm_rindex);
+    PAIRED(parm_ich, parm_dch);
+
+    /*
+     * These may be mismatched because the terminal description relies on
+     * restoring the cursor visibility by resetting it.
+     */
+    ANDMISSING(cursor_invisible, cursor_normal);
+    ANDMISSING(cursor_visible, cursor_normal);
+
+    if (PRESENT(cursor_visible) && PRESENT(cursor_normal)
+       && !_nc_capcmp(cursor_visible, cursor_normal))
+       _nc_warning("cursor_visible is same as cursor_normal");
+
+    /*
+     * From XSI & O'Reilly, we gather that sc/rc are required if csr is
+     * given, because the cursor position after the scrolling operation is
+     * performed is undefined.
+     */
+    ANDMISSING(change_scroll_region, save_cursor);
+    ANDMISSING(change_scroll_region, restore_cursor);
+
+    /*
+     * If we can clear tabs, we should be able to initialize them.
+     */
+    ANDMISSING(clear_all_tabs, set_tab);
+
+    if (PRESENT(set_attributes)) {
+       char *zero = 0;
+
+       _nc_tparm_err = 0;
+       if (PRESENT(exit_attribute_mode)) {
+           zero = strdup(CHECK_SGR(0, exit_attribute_mode));
+       } else {
+           zero = strdup(TIPARM_9(set_attributes, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+       }
+       if (_nc_tparm_err)
+           _nc_warning("stack error in sgr(0) string");
+
+       if (zero != 0) {
+           CHECK_SGR(1, enter_standout_mode);
+           CHECK_SGR(2, enter_underline_mode);
+           CHECK_SGR(3, enter_reverse_mode);
+           CHECK_SGR(4, enter_blink_mode);
+           CHECK_SGR(5, enter_dim_mode);
+           CHECK_SGR(6, enter_bold_mode);
+           CHECK_SGR(7, enter_secure_mode);
+           CHECK_SGR(8, enter_protected_mode);
+           CHECK_SGR(9, enter_alt_charset_mode);
+           free(zero);
+       } else {
+           _nc_warning("sgr(0) did not return a value");
+       }
+    } else if (PRESENT(exit_attribute_mode) &&
+              set_attributes != CANCELLED_STRING) {
+       if (_nc_syntax == SYN_TERMINFO)
+           _nc_warning("missing sgr string");
+    }
+#define CHECK_SGR0(name) check_exit_attribute(#name, name, check_sgr0, exit_attribute_mode)
+    if (PRESENT(exit_attribute_mode)) {
+       char *check_sgr0 = _nc_trim_sgr0(tp);
+
+       if (check_sgr0 == 0 || *check_sgr0 == '\0') {
+           _nc_warning("trimmed sgr0 is empty");
+       } else {
+           show_where(2);
+           if (check_sgr0 != exit_attribute_mode) {
+               DEBUG(2,
+                     ("will trim sgr0\n\toriginal sgr0=%s\n\ttrimmed  sgr0=%s",
+                      _nc_visbuf2(1, exit_attribute_mode),
+                      _nc_visbuf2(2, check_sgr0)));
+           } else {
+               DEBUG(2,
+                     ("will not trim sgr0\n\toriginal sgr0=%s",
+                      _nc_visbuf(exit_attribute_mode)));
+           }
+       }
+#if defined(exit_italics_mode)
+       CHECK_SGR0(exit_italics_mode);
+#endif
+       CHECK_SGR0(exit_standout_mode);
+       CHECK_SGR0(exit_underline_mode);
+       if (check_sgr0 != exit_attribute_mode) {
+           free(check_sgr0);
+       }
+    }
+#define CHECK_SGR_PARAM(code, name) check_sgr_param(tp, (int)code, #name, name)
+    for (j = 0; *sgr_names[j] != '\0'; ++j) {
+       CHECK_SGR_PARAM(j, set_a_foreground);
+       CHECK_SGR_PARAM(j, set_a_background);
+       CHECK_SGR_PARAM(j, set_foreground);
+       CHECK_SGR_PARAM(j, set_background);
+    }
+#ifdef TRACE
+    show_where(2);
+    if (!auto_right_margin) {
+       DEBUG(2,
+             ("can write to lower-right directly"));
+    } else if (PRESENT(enter_am_mode) && PRESENT(exit_am_mode)) {
+       DEBUG(2,
+             ("can write to lower-right by suppressing automargin"));
+    } else if ((PRESENT(enter_insert_mode) && PRESENT(exit_insert_mode))
+              || PRESENT(insert_character) || PRESENT(parm_ich)) {
+       DEBUG(2,
+             ("can write to lower-right by using inserts"));
+    } else {
+       DEBUG(2,
+             ("cannot write to lower-right"));
+    }
+#endif
+
+    /*
+     * Some standard applications (e.g., vi) and some non-curses
+     * applications (e.g., jove) get confused if we have both ich1 and
+     * smir/rmir.  Let's be nice and warn about that, too, even though
+     * ncurses handles it.
+     */
+    if ((PRESENT(enter_insert_mode) || PRESENT(exit_insert_mode))
+       && PRESENT(insert_character)) {
+       _nc_warning("non-curses applications may be confused by ich1 with smir/rmir");
+    }
+
+    /*
+     * Finally, do the non-verbose checks
+     */
+    if (save_check_termtype != 0)
+       save_check_termtype(tp, literal);
 }