Add support for scroll(1)

[st.git] / st.c

diff --git a/st.c b/st.c
index 3e48410..5f2352a 100644 (file)
--- 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");