[RFC/PATCH 3/3] autoreconf: Use note channel for enter/leave messages.

[Bert Wesarg]

GNU Make always prints them, except when using --silent. Adopt this
behavior.

* lib/Autom4te/ChannelDefs.pm (note): New. (@EXPORT): Add note.
* bin/autoreconf.in (autoreconf): Use new note sub for enter/leave
directory messages. Do not print them when no directry was given or empty.
(parse_args): Use '' in ARGV when no directory was given, so that no
enter/leave messages are printed.

Signed-off-by: Bert Wesarg <bert.wes...@googlemail.com>
---
 bin/autoreconf.in           |   21 ++++++++++++++-------
 lib/Autom4te/ChannelDefs.pm |   14 +++++++++++++-
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/bin/autoreconf.in b/bin/autoreconf.in
index 006b1b9..c9ef36b 100644
--- a/bin/autoreconf.in
+++ b/bin/autoreconf.in
@@ -172,7 +172,8 @@ sub parse_args ()
   # is simpler, and (ii) we are still able to diagnose simultaneous
   # presence of configure.ac and configure.in.
   @ARGV = map { /configure\.(ac|in)$/ ? dirname ($_) : $_ } @ARGV;
-  push @ARGV, '.' unless @ARGV;
+  # do not use '.', so that we don't print the enter/leave messages
+  push @ARGV, '' unless @ARGV;
 
   if ($verbose && $debug)
     {
@@ -667,17 +668,23 @@ sub autoreconf ($)
 
   # The format for this message is not free: taken from Emacs, itself
   # using GNU Make's format.
-  verb "Entering directory `$directory'";
-  chdir $directory
-    or error "cannot chdir to $directory: $!";
+  if ($directory)
+    {
+      note "Entering directory `$directory'";
+      chdir $directory
+       or error "cannot chdir to $directory: $!";
+    }
 
   autoreconf_current_directory;
 
   # The format is not free: taken from Emacs, itself using GNU Make's
   # format.
-  verb "Leaving directory `$directory'";
-  chdir $cwd
-    or error "cannot chdir to $cwd: $!";
+  if ($directory)
+    {
+      note "Leaving directory `$directory'";
+      chdir $cwd
+       or error "cannot chdir to $cwd: $!";
+    }
 }
 
 
diff --git a/lib/Autom4te/ChannelDefs.pm b/lib/Autom4te/ChannelDefs.pm
index c66d322..fea6419 100644
--- a/lib/Autom4te/ChannelDefs.pm
+++ b/lib/Autom4te/ChannelDefs.pm
@@ -54,7 +54,7 @@ use Exporter;
 use vars qw (@ISA @EXPORT);
 
 @ISA = qw (Exporter);
-@EXPORT = qw (&prog_error &error &fatal &verb
+@EXPORT = qw (&prog_error &error &fatal &verb &note
              &switch_warning &parse_WARNINGS &parse_warnings);
 
 =head2 CHANNELS
@@ -236,6 +236,18 @@ sub verb ($;%)
   msg 'verb', '', $msg, %opts;
 }
 
+=item C<note ($MESSAGE, [%OPTIONS])>
+
+Messages which can be silence with C<--silent>.
+
+=cut
+
+sub note ($;%)
+{
+  my ($msg, %opts) = @_;
+  msg 'note', '', $msg, %opts;
+}
+
 =item C<switch_warning ($CATEGORY)>
 
 If C<$CATEGORY> is C<mumble>, turn on channel C<mumble>.
-- 
1.7.7.931.gdbe98