From 21e0d6e8b8d20903494386e7e6f43201b3761154 Mon Sep 17 00:00:00 2001 From: "Roberto E. Vargas Caballero" Date: Fri, 10 Apr 2020 22:06:32 +0200 Subject: 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. --- st.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'st.c') diff --git a/st.c b/st.c index 3e48410..5f2352a 100644 --- 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"); -- cgit v1.2.3-13-gbd6f