X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Ftabs.1.html;h=626ae357a14f5f6e8ae08aa0bb260692cf1debab;hp=b921bf8570da9e2aabe4da1b60b83da7bc99b99b;hb=5899b5e464ecec4b1613f6fef8cb7b75793c88e3;hpb=51a395aaa20e4aa687310bb8cb1616ccf8e8fd0d
diff --git a/doc/html/man/tabs.1.html b/doc/html/man/tabs.1.html
index b921bf85..626ae357 100644
--- a/doc/html/man/tabs.1.html
+++ b/doc/html/man/tabs.1.html
@@ -1,6 +1,7 @@
@@ -167,24 +168,28 @@
The -d (debug) and -n (no-op) options are extensions not provided by
other implementations.
- A tabs utility appeared in PWB/Unix 1.0 (1977), and thereafter in 3BSD
- (1979). It supported a single "-n" option (to cause the first tab stop
+ A tabs utility appeared in PWB/Unix 1.0 (1977). There was a reduced
+ version of the tabs utility in Unix 7th edition and in 3BSD (1979).
+ The latter supported a single "-n" option (to cause the first tab stop
to be set on the left margin). That option is not documented by POSIX.
- Initially, tabs used built-in tables rather than the terminal database,
- to support a half-dozen terminal types. It also had built-in logic to
- support the left-margin, as well as a feature for copying the tab set-
- tings from a file.
-
- Later versions of Unix, e.g., SVr4, added support for the terminal
- database, but kept the tables, as a fallback. In an earlier develop-
- ment effort, the tab-stop initialization provided by tset (1982) and
+
+ The PWB/Unix tabs utility, which was included in System III (1980),
+ used built-in tables rather than the terminal database, to support a
+ half-dozen terminal types. It also had built-in logic to support the
+ left-margin, as well as a feature for copying the tab settings from a
+ file.
+
+ Later versions of Unix, e.g., SVr4, added support for the terminal
+ database, but kept the tables, as a fallback. In an earlier develop-
+ ment effort, the tab-stop initialization provided by tset (1982) and
incorporated into tput uses the terminal database,
- POSIX documents no limits on the number of tab stops. Documentation
+ POSIX documents no limits on the number of tab stops. Documentation
for other implementations states that there is a limit on the number of
- tab stops. While some terminals may not accept an arbitrary number of
- tab stops, this implementation will attempt to set tab stops up to the
- right margin of the screen, if the given list happens to be that long.
+ tab stops (e.g., 20 in PWB/Unix's tabs utility). While some terminals
+ may not accept an arbitrary number of tab stops, this implementation
+ will attempt to set tab stops up to the right margin of the screen, if
+ the given list happens to be that long.
The Rationale section of the POSIX documentation goes into some detail
about the ways the committee considered redesigning the tabs and tput
@@ -201,7 +206,7 @@
tset(1), infocmp(1m), curses(3x), terminfo(5).
- This describes ncurses version 6.1 (patch 20190615).
+ This describes ncurses version 6.2 (patch 20200725).