Add a minimal output mode that shows output when appropriate. Closes: #694031

diff --git a/mr b/mr
index 9bcc1ea8c03d66c0c5302af5b2b779ba338dcdb9..87acef39b279cf4d119f35912ebc8967a7cf524c 100755 (executable)
--- a/mr
+++ b/mr
@@ -265,6 +265,13 @@ configuration.
 
 Be verbose.
 
+=item -m
+
+=item --minimal
+
+Minimise output. If a command fails or there is any output then the usual
+output will be shown.
+
 =item -q
 
 =item --quiet
@@ -568,6 +575,7 @@ use constant {
 # configurables
 my $config_overridden=0;
 my $verbose=0;
+my $minimal=0;
 my $quiet=0;
 my $stats=0;
 my $force=0;
@@ -726,6 +734,7 @@ sub terminal_friendly_spawn {
        my $actionmsg = shift;
        my $sh = shift;
        my $quiet = shift;
+       my $minimal = shift;
        my $output = "";
        if ($terminal) {
                my $pty = IO::Pty::Easy->new;
@@ -742,11 +751,11 @@ sub terminal_friendly_spawn {
        if ($quiet && $ret != 0) {
                print "$actionmsg\n" if $actionmsg;
                print STDERR $output;
-       } elsif (!$quiet) {
+       } elsif (!$quiet && (!$minimal || $output)) {
                print "$actionmsg\n" if $actionmsg;
                print $output;
        }
-       return $ret;
+       return ($ret, $output ? 1 : 0);
 }
 
 sub action {
@@ -828,7 +837,7 @@ sub action {
                        return FAILED;
                }
                else {
-                       print STDERR "mr $action: no defined action for $vcs repository $fulldir, skipping\n";
+                       print STDERR "mr $action: no defined action for $vcs repository $fulldir, skipping\n" unless $minimal;
                        return SKIPPED;
                }
        }
@@ -842,16 +851,16 @@ sub action {
                        $s=~s/^\Q$fulldir\E\/?//;
                        $actionmsg="mr $action: $fulldir (in subdir $s)";
                }
-               print "$actionmsg\n" unless $quiet;
+               print "$actionmsg\n" unless $quiet || $minimal;
 
                my $hookret=hook("pre_$action", $topdir, $subdir);
                return $hookret if $hookret != OK;
 
-               my $ret=runsh $action, $topdir, $subdir,
+               my ($ret, $out)=runsh $action, $topdir, $subdir,
                        $command, \@ARGV, sub {
                                my $sh=shift;
-                               if (!$jobs || $jobs > 1 || $quiet) {
-                                       return terminal_friendly_spawn($actionmsg, $sh, $quiet);
+                               if (!$jobs || $jobs > 1 || $quiet || $minimal) {
+                                       return terminal_friendly_spawn($actionmsg, $sh, $quiet, $minimal);
                                }
                                else {
                                        system($sh);
@@ -889,7 +898,7 @@ sub action {
                                return FAILED;
                        }
 
-                       my $ret=hook("post_$action", $topdir, $subdir);
+                       my ($ret, $hook_out)=hook("post_$action", $topdir, $subdir);
                        return $ret if $ret != OK;
                        
                        if ($is_checkout || $is_update) {
@@ -903,7 +912,7 @@ sub action {
                                return $ret if $ret != OK;
                        }
                        
-                       return OK;
+                       return (OK, $out || $hook_out);
                }
        }
 }
@@ -913,10 +922,10 @@ sub hook {
 
        my $command=$config{$topdir}{$subdir}{$hook};
        return OK unless defined $command;
-       my $ret=runsh $hook, $topdir, $subdir, $command, [], sub {
+       my ($ret,$out)=runsh $hook, $topdir, $subdir, $command, [], sub {
                        my $sh=shift;
-                       if (!$jobs || $jobs > 1 || $quiet) {
-                               return terminal_friendly_spawn(undef, $sh, $quiet);
+                       if (!$jobs || $jobs > 1 || $quiet || $minimal) {
+                               return terminal_friendly_spawn(undef, $sh, $quiet, $minimal);
                        }
                        else {
                                system($sh);
@@ -936,7 +945,7 @@ sub hook {
                }
        }
 
-       return OK;
+       return (OK, $out);
 }
 
 # run actions on multiple repos, in parallel
@@ -964,7 +973,7 @@ sub mrs {
                                close CHILD_STDERR;
                                close $outfh;
                                close $errfh;
-                               exit action($action, @$repo);
+                               exit +(action($action, @$repo))[0];
                        }
                        close CHILD_STDOUT;
                        close CHILD_STDERR;
@@ -995,7 +1004,7 @@ sub mrs {
                                                        waitpid($active[$i][0], 0);
                                                        print STDOUT $out[$i][0];
                                                        print STDERR $out[$i][1];
-                                                       record($active[$i][1], $? >> 8);
+                                                       record($active[$i][1], $? >> 8, $out[$i][0] || $out[$i][1]);
                                                        splice(@fhs, $i, 1);
                                                        splice(@active, $i, 1);
                                                        splice(@out, $i, 1);
@@ -1012,10 +1021,11 @@ sub mrs {
 sub record {
        my $dir=shift()->[0];
        my $ret=shift;
+       my $out=shift;
 
        if ($ret == OK) {
                push @ok, $dir;
-               print "\n" unless $quiet;
+               print "\n" unless $quiet || ($minimal && !$out);
        }
        elsif ($ret == FAILED) {
                if ($interactive) {
@@ -1046,10 +1056,10 @@ sub showstats {
                showstat($#ok+1, "ok", "ok"),
                showstat($#failed+1, "failed", "failed"),
                showstat($#skipped+1, "skipped", "skipped"),
-       ).")\n" unless $quiet;
+       ).")\n" unless $quiet || $minimal;
        if ($stats) {
                if (@skipped) {
-                       print "mr $action: (skipped: ".join(" ", @skipped).")\n" unless $quiet;
+                       print "mr $action: (skipped: ".join(" ", @skipped).")\n" unless $quiet || $minimal;
                }
                if (@failed) {
                        print STDERR "mr $action: (failed: ".join(" ", @failed).")\n";
@@ -1841,6 +1851,7 @@ sub getopts {
                "p|path" => sub { }, # now default, ignore
                "f|force" => \$force,
                "v|verbose" => \$verbose,
+               "m|minimal" => \$minimal,
                "q|quiet" => \$quiet,
                "s|stats" => \$stats,
                "k|insecure" => \$insecure,