Give up on implementing proglist portably in sh and do it in C. Fixes issue #42.

cmd/wmii.rc.rc

@@ -58,10 +58,7 @@ fn wi_fn-p {
 }
 
 fn wi_proglist {
-	# XXX: maxdepth is not POSIX compliant.
-	ifs=: { find -L `{echo -n $*} -type f -a -maxdepth 1 \
-	        '(' -perm -0100 -o -perm -0010 -o -perm -0001 ')' >[2]/dev/null \
-		| sed 's,.*/,,' | sort | uniq}
+	ifs=: { wmiir proglist -- `{echo -n $*} | sort | uniq }
 }
 
 fn wi_actions {

cmd/wmii.sh.sh

@@ -135,9 +135,7 @@ wi_fnmenu() {
 }
 
 wi_proglist() {
-        ls -lL $(echo $* | sed 'y/:/ /') 2>/dev/null \
-		| awk '$1 ~ /^[^d].*x/ { print $NF }' \
-		| sort | uniq
+        wmiir proglist -- $(echo $* | sed 'y/:/ /') | sort | uniq
 }
 
 wi_actions() {

cmd/wmiir.c

@@ -3,6 +3,7 @@
  */
 #define IXP_NO_P9_
 #define IXP_P9_STRUCTS
+#include <dirent.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/signal.h>
@@ -328,15 +329,44 @@ xnamespace(int argc, char *argv[]) {
 	return 0;
 }
 
+static int
+xproglist(int argc, char *argv[]) {
+	DIR *d;
+	struct dirent *de;
+	char *dir;
+
+	quotefmtinstall();
+
+	ARGBEGIN{
+	default:
+		usage();
+	}ARGEND;
+
+	while((dir = ARGF()))
+		if((d = opendir(dir))) {
+			while((de = readdir(d)))
+				if(access(de->d_name, X_OK))
+					print("%q\n", de->d_name);
+			closedir(d);
+		}
+
+	return 0; /* NOTREACHED */
+}
+
 static int
 xsetsid(int argc, char *argv[]) {
 	char *av0;
+	bool dofork;
 
 	av0 = nil;
+	dofork = false;
 	ARGBEGIN{
 	case '0':
 		av0 = EARGF(usage());
 		break;
+	case 'f':
+		dofork = true;
+		break;
 	default:
 		usage();
 	}ARGEND;
@@ -346,6 +376,13 @@ xsetsid(int argc, char *argv[]) {
 		return 1;
 
 	setsid();
+	if(dofork)
+		switch(fork()) {
+		case 0:  break;
+		case -1: fatal("can't fork: %r\n");
+		default: return 0;
+		}
+
 	execvp(av0, argv);
 	fatal("setsid: can't exec: %r");
 	return 1; /* NOTREACHED */
@@ -368,6 +405,7 @@ struct exectab {
 }, utiltab[] = {
 	{"namespace", xnamespace},
 	{"ns", xnamespace},
+	{"proglist", xproglist},
 	{"setsid", xsetsid},
 	{0, }
 };

man/wmiir.1

@@ -25,6 +25,9 @@ configuration scripts.
 The address at which to connect to \fBwmii\fR.
 
 .SH COMMANDS
+.P
+The following commands deal with 9P filesystems.
+
 .TP
 create \fI<file>\fR
 Creates a new file or directory in the filesystem. Permissions and
@@ -57,7 +60,7 @@ Synonyms: \fBcat\fR
 remove \fI<path>\fR
 Removes \fI<path>\fR from the filesystem.
 
-Synonyms: rm
+Synonyms: \fBrm\fR
 .TP
 write \fI<file>\fR
 Writes the contents of the standard input to \fI<file>\fR.
@@ -66,6 +69,48 @@ xwrite \fI<file>\fR \fI<data>\fR ...
 Writes each argument after \fI<file>\fR to the latter.
 
 
+.P
+Additionally, wmiir provides the following utility commands relevant
+to scripting wmii:
+
+.TP
+namespace
+
+.RS
+Prints the current wmii namespace directory, usually
+equivalent to /tmp/ns.\fB$USER\fR.\fB${DISPLAY\fR%.0\fB}\fR, but possibly
+different depending on the value of \fB$NAMESPACE\fR and
+\fB$WMII_NAMESPACE\fR.
+.RE
+
+.RS
+Synonyms: \fBns\fR
+.RE
+.TP
+setsid \fI[\-0 \fI<argv0>\fR]\fR \fI[\-f]\fR \fI<command>\fR
+
+.RS
+Executes the given command after setting the session id (see
+setsid(2)). If \fI\-0\fR is given, the command is run with the
+given value as argv\fI[0]\fR. For instance, to run sh as a login
+shell, one might run
+.RE
+
+.nf
+         wmiir setsid -0 -sh sh
+.fi
+
+.RS
+If \fI\-f\fR is given, wmiir will fork into the background before
+executing the command.
+.RE
+.TP
+proglist \fI[\-\-]\fR \fI<directory>\fR ...
+
+.RS
+Lists all executable commands in the given directories.
+.RE
+
 .SH ENVIRONMENT
 .TP
 \fB$WMII_ADDRESS\fR

man/wmiir.man1

@@ -28,6 +28,8 @@ configuration scripts.
 :
 = COMMANDS =
 
+The following commands deal with 9P filesystems.
+
 : create <file>
         Creates a new file or directory in the filesystem. Permissions and
         file type are inferred by `wmii`. The contents of the standard input
@@ -53,13 +55,35 @@ configuration scripts.
 : remove <path>
         Removes <path> from the filesystem.
 
-        Synonyms: rm
+        Synonyms: `rm`
 : write <file>
         Writes the contents of the standard input to <file>.
 : xwrite <file> <data> ...
         Writes each argument after <file> to the latter.
 :
 
+Additionally, wmiir provides the following utility commands relevant
+to scripting wmii:
+
+: namespace
+	Prints the current wmii namespace directory, usually
+	equivalent to /tmp/ns.$USER.${DISPLAY%.0}, but possibly
+	different depending on the value of $NAMESPACE and
+	$WMII_NAMESPACE.
+
+	Synonyms: `ns`
+: setsid [-0 <argv0>] [-f] <command>
+	Executes the given command after setting the session id (see
+	setsid(2)). If _-0_ is given, the command is run with the
+	given value as argv[0]. For instance, to run sh as a login
+	shell, one might run
+
+```        wmiir setsid -0 -sh sh
+	If _-f_ is given, wmiir will fork into the background before
+	executing the command.
+: proglist [--] <directory> ...
+	Lists all executable commands in the given directories.
+
 = ENVIRONMENT =
 
 : $WMII_ADDRESS