st

Personal fork of ST from suckless.org; st is a simple terminal implementation for X.
git clone git://git.swab.dev/st.git
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commit 21e0d6e8b8d20903494386e7e6f43201b3761154
parent 5703aa0390484dd7da4bd9c388c85708d8fcd339
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Fri, 10 Apr 2020 22:06:32 +0200

Add support for scroll(1)

Scroll is a program that stores all the lines of its child and be used in st as
a way of implementing scrollback.

This solution is much better than implementing the scrollback in st itself
because having a different program allows to use it in any other program
without doing modifications to those programs.

Diffstat:
Mconfig.def.h | 3++-
Mst.1 | 3++-
Mst.c | 16++++++++++------
Mst.h | 1+
4 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/config.def.h b/config.def.h @@ -11,13 +11,14 @@ static int borderpx = 2; /* * What program is execed by st depends of these precedence rules: * 1: program passed with -e - * 2: utmp option + * 2: scroll and/or utmp * 3: SHELL environment variable * 4: value of shell in /etc/passwd * 5: value of shell in config.h */ static char *shell = "/bin/sh"; char *utmp = NULL; +char *scroll = NULL; char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400"; /* identification sequence returned in DA and DECID */ diff --git a/st.1 b/st.1 @@ -170,7 +170,8 @@ See the LICENSE file for the terms of redistribution. .SH SEE ALSO .BR tabbed (1), .BR utmp (1), -.BR stty (1) +.BR stty (1), +.BR scroll (1) .SH BUGS See the TODO file in the distribution. diff --git a/st.c b/st.c @@ -664,7 +664,7 @@ die(const char *errstr, ...) void execsh(char *cmd, char **args) { - char *sh, *prog; + char *sh, *prog, *arg; const struct passwd *pw; errno = 0; @@ -678,13 +678,17 @@ execsh(char *cmd, char **args) if ((sh = getenv("SHELL")) == NULL) sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd; - if (args) + if (args) { prog = args[0]; - else if (utmp) - prog = utmp; - else + arg = NULL; + } else if (scroll || utmp) { + prog = scroll ? scroll : utmp; + arg = scroll ? utmp : NULL; + } else { prog = sh; - DEFAULT(args, ((char *[]) {prog, NULL})); + arg = NULL; + } + DEFAULT(args, ((char *[]) {prog, arg, NULL})); unsetenv("COLUMNS"); unsetenv("LINES"); diff --git a/st.h b/st.h @@ -113,6 +113,7 @@ char *xstrdup(char *); /* config.h globals */ extern char *utmp; +extern char *scroll; extern char *stty_args; extern char *vtiden; extern wchar_t *worddelimiters;