Change interface: make 2nd param _space_-separated, not comma-separated

* m4/include-exclude-prog.m4 (gl_INCLUDE_EXCLUDE_PROG): Remove now-
unnecessary use of tr.
Improve comments.
* configure.ac: Adjust caller, as well as the code that ensures the
2nd parameter stays in sync with the list in src/Makefile.am.

3 files changed, 19 insertions, 11 deletions

diff --git a/ChangeLog b/ChangeLog
index 5d570e45a..48224ee57 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2007-07-14  Jim Meyering  <jim@meyering.net>
+
+	Change interface: make 2nd param _space_-separated, not comma-separated
+	* m4/include-exclude-prog.m4 (gl_INCLUDE_EXCLUDE_PROG): Remove now-
+	unnecessary use of tr.
+	Improve comments.
+	* configure.ac: Adjust caller, as well as the code that ensures the
+	2nd parameter stays in sync with the list in src/Makefile.am.
+
 2007-07-14  Karel Zak  <kzak@redhat.com>
 
 	* m4/include-exclude-prog.m4 (gl_REMOVE_PROG): Fix typo: s/$2/$1/.
diff --git a/configure.ac b/configure.ac
index 6b5f37388..6b5cba4af 100644
--- a/configure.ac
+++ b/configure.ac
@@ -270,16 +270,15 @@ t=`sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
 no_install_progs_default=`echo "$t"|sed 's/ $//'`
 
 # Unfortunately, due to the way autoconf's AS_HELP_STRING works, the
-# list of default-not-installed programs, "arch,su", must appear in two
-# places: in this file below, and in $mk.  Simply using comma-separated
-# variant of "$no_install_progs_default" cannot work.  And we can't
-# substitute the names into $mk because automake needs the literals, too.
+# list of default-not-installed programs, "arch su", must appear in two
+# places: in this file below, and in $mk.  Using "$no_install_progs_default"
+# below cannot work.  And we can't substitute the names into $mk because
+# automake needs the literals, too.
 # The compromise is to ensure that the space-separated list extracted
-# above matches the comma-separated list below.
+# above matches the literal 2nd argument below.
 c="$srcdir/configure.ac"
 t=`sed -n '/^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])/s//\1/p' $c`
-u=`echo "$t"|sed 's/,/ /g'`
-case $u in
+case $t in
   $no_install_progs_default) ;;
   *) AC_MSG_ERROR([[internal error: g'l_INCLUDE_EXCLUDE_PROG's 2nd arg, $t,
                    does not match the list of default-not-installed programs
@@ -293,7 +292,7 @@ esac
 # "don't-install" requests.
 # I.e., add any program name specified via --enable-install-program=..., and
 # remove any program name specified via --enable-no-install-program=...
-gl_INCLUDE_EXCLUDE_PROG([optional_bin_progs], [arch,su])
+gl_INCLUDE_EXCLUDE_PROG([optional_bin_progs], [arch su])
 
 # Set INSTALL_SU if su installation has been requested via
 # --enable-install-program=su.
diff --git a/m4/include-exclude-prog.m4 b/m4/include-exclude-prog.m4
index 32447f592..e5612c69f 100644
--- a/m4/include-exclude-prog.m4
+++ b/m4/include-exclude-prog.m4
@@ -24,13 +24,13 @@ AC_DEFUN([gl_REMOVE_PROG],
 
 # Given the name of a variable containing a space-separated list of
 # install-by-default programs and the list of do-not-install-by-default
-# programs, modify the former variable to reflect "don't-install" and
+# programs, modify the former variable to reflect "no-install" and
 # "do-install" requests.
 #
-# Usage: gl_INCLUDE_EXCLUDE_PROG([prog_list_var_name], [NI_prog1])
+# Usage: gl_INCLUDE_EXCLUDE_PROG([prog_list_var_name], [no_inst_prog_list])
 AC_DEFUN([gl_INCLUDE_EXCLUDE_PROG],
 [{
-  gl_no_install_progs_default=`echo "$2"|tr -s , ' '`
+  gl_no_install_progs_default='$2'
   AC_ARG_ENABLE([install-program],
     [AS_HELP_STRING([--enable-install-program=PROG_LIST],
 		    [install the programs in PROG_LIST (comma-separated,