commit 5afb3862ba368de8888c0c570098baababc7bc19
from: Roberto E. Vargas Caballero <k0ga@shike2.com>
date: Tue Sep 23 05:12:41 2014 UTC

Add support for utmp in st

St runs an interactive shell and not a login shell, and it means
that profile is not loaded. The default terminal configuration
in some system is not the correct for st, but since profile is
not loaded there is no way of getting a script configures the
correct values.

St doesn't update the utmp files, this is the job of another
suckless tool, utmp. Utmp also opens a login shell (it is the
logical behaviour when you create a new user record) it is a
good option execute utmp and then get a correct input in
utmp, wtmp and lastlog file, and execute the content of the
profile.

commit - 0392d165d07143eec29c730364006bc0613e1198
commit + 5afb3862ba368de8888c0c570098baababc7bc19
blob - fe810789e50d948f63949442e674894c901f1229
blob + cc16f97664502e03dce11cc455ae8d9ba647f55d
--- config.def.h
+++ config.def.h
@@ -8,6 +8,7 @@
 static char font[] = "Liberation Mono:pixelsize=12:antialias=false:autohint=false";
 static int borderpx = 2;
 static char shell[] = "/bin/sh";
+static char *utmp = NULL;
 
 /* identification sequence returned in DA and DECID */
 static char vtiden[] = "\033[?6c";
blob - dd3301b121083cfaeea2383d7912e31634f2b860
blob + ab3fa6e6ab2caf1ca8ce264870b5082275c02fcd
--- st.c
+++ st.c
@@ -1153,16 +1153,22 @@ execsh(void) {
 		else
 			die("who are you?\n");
 	}
+
+	if (utmp)
+		sh = utmp;
+	else if (pw->pw_shell[0])
+		sh = pw->pw_shell;
+	else
+		sh = shell;
+	args = (opt_cmd) ? opt_cmd : (char *[]){sh, NULL};
+	snprintf(buf, sizeof(buf), "%lu", xw.win);
+
 	unsetenv("COLUMNS");
 	unsetenv("LINES");
 	unsetenv("TERMCAP");
-
-	sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
-	snprintf(buf, sizeof(buf), "%lu", xw.win);
-
 	setenv("LOGNAME", pw->pw_name, 1);
 	setenv("USER", pw->pw_name, 1);
-	setenv("SHELL", sh, 1);
+	setenv("SHELL", args[0], 1);
 	setenv("HOME", pw->pw_dir, 1);
 	setenv("TERM", termname, 1);
 	setenv("WINDOWID", buf, 1);
@@ -1174,7 +1180,6 @@ execsh(void) {
 	signal(SIGTERM, SIG_DFL);
 	signal(SIGALRM, SIG_DFL);
 
-	args = opt_cmd ? opt_cmd : (char *[]){sh, "-i", NULL};
 	execvp(args[0], args);
 	exit(EXIT_FAILURE);
 }