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    commit 5afb3862ba368de8888c0c570098baababc7bc19
    parent 0392d165d07143eec29c730364006bc0613e1198
    Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
    Date:   Thu, 28 Aug 2014 12:48:29 +0200

    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.

    Diffstat:
    Mconfig.def.h | 1+
    Mst.c | 17+++++++++++------

    2 files changed, 12 insertions(+), 6 deletions(-)
    diff --git a/config.def.h b/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";
    diff --git a/st.c b/st.c
    @@ -1153,16 +1153,22 @@ execsh(void) {
     		else
     			die("who are you?\n");
     	}
    -	unsetenv("COLUMNS");
    -	unsetenv("LINES");
    -	unsetenv("TERMCAP");

    -	sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
    +	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");
     	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);
     }