clarify

[code/myrepos.git] / mr

diff --git a/mr b/mr
index b1139e5b2a12f0e908d278fdf18ccac0112e2327..2b5c65643a5962c6b05258098f2c84bfdbc88ca9 100755 (executable)
--- a/mr
+++ b/mr
@@ -16,6 +16,8 @@ B<mr> [options] commit [-m "message"]
 
 B<mr> [options] diff
 
+B<mr> [options] log
+
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
@@ -28,6 +30,11 @@ respository.
 Any mix of revision control systems can be used with B<mr>, and you can
 define arbitrary actions for commands like "update", "checkout", or "commit".
 
+B<mr> cds into and operates on all registered repsitories at or below your
+working directory. Or, if you are in a subdirectory of a repository that
+contains no other registered repositories, it will stay in that directory,
+and work on only that repository,
+
 The predefined commands should be fairly familiar to users of any revision
 control system:
 
@@ -59,7 +66,11 @@ The optional -m parameter allows specifying a commit message.
 
 Show a diff of uncommitted changes.
 
-=item list
+=item log
+
+Show the commit log.
+
+=item list (or ls)
 
 List the repositories that mr will act on.
 
@@ -70,11 +81,8 @@ Displays this help.
 =back
 
 Actions can be abbreviated to any unambiguous subsctring, so
-"mr st" is equivilant to "mr status".
-
-B<mr> operates on all registered repsitories at or below your working
-directory. Or, if you are in a subdirectory of a repository that contains
-no other registered repositories, it will act on only that repository.
+"mr st" is equivilant to "mr status", and "mr up" is equivilant to "mr
+update"
 
 Additional parameters can be passed to other commands than "commit", they
 will be passed on unchanged to the underlying revision control system.
@@ -92,7 +100,7 @@ the current working directory.
 
 =item -c mrconfig
 
-Use the specified mrconfig file, instead of looking for on in your home
+Use the specified mrconfig file, instead of looking for one in your home
 directory.
 
 =item -v
@@ -130,16 +138,16 @@ If the "chain" parameter is set and its command returns nonzero, then B<mr>
 will try to load a .mrconfig file from the root of the repository. (You
 should avoid chaining from repositories with untrusted committers.) The
 "lib" parameter can specify some shell code that will be run before each
-command, this can be a useful way to define shell functions other commands
-can use.
+command, this can be a useful way to define shell functions for other commands
+to use.
 
 The "default" section allows setting up default handlers for each action,
 and is overridden by the contents of other sections. mr contains default
 handlers for the "update", "status", and "commit" actions, so normally
 you only need to specify what to do for "checkout".
 
-The "alias" section allows adding aliases for commands. Each parameter
-is an alias, and its value is the command to run.
+The "alias" section allows adding aliases for actions. Each parameter
+is an alias, and its value is the action to use.
 
 For example:
 
@@ -217,8 +225,13 @@ if (! exists $knownactions{$action}) {
                if (@matches == 1) {
                        $action=$matches[0];
                }
+               elsif (@matches == 0) {
+                       die "mr: unknown action \"$action\" (known actions: ".
+                               join(", ", sort keys %knownactions).")\n";
+               }
                else {
-                       die "mr: ambiguous action \"$action\" (matches @matches)\n";
+                       die "mr: ambiguous action \"$action\" (matches: ".
+                               join(", ", @matches).")\n";
                }
        }
 }
@@ -232,6 +245,7 @@ my @repos;
 my $nochdir=0;
 foreach my $topdir (sort keys %config) {
        foreach my $subdir (sort keys %{$config{$topdir}}) {
+               next if $subdir eq 'default';
                my $dir=$topdir.$subdir;
                next if $dir ne $directory && $dir !~ /^\Q$directory\E\//;
                push @repos, [$dir, $topdir, $subdir];
@@ -239,20 +253,20 @@ foreach my $topdir (sort keys %config) {
 }
 if (! @repos) {
        # fallback to find a leaf repo
-       foreach my $topdir (sort keys %config) {
-               foreach my $subdir (sort keys %{$config{$topdir}}) {
+       LEAF: foreach my $topdir (reverse sort keys %config) {
+               foreach my $subdir (reverse sort keys %{$config{$topdir}}) {
+                       next if $subdir eq 'default';
                        my $dir=$topdir.$subdir;
                        my $d=$directory;
                        $dir.="/" unless $dir=~/\/$/;
                        $d.="/" unless $d=~/\/$/;
                        if ($d=~/^\Q$dir\E/) {
                                push @repos, [$dir, $topdir, $subdir];
+                               last LEAF;
                        }
                }
        }
-       if (@repos > 1) {
-               die "mr: found multiple leaf repos (should never happen)";
-       }
+       $nochdir=1;
 }
 
 my (@failed, @successful, @skipped);
@@ -300,7 +314,12 @@ sub action {
                push @skipped, $dir;
        }
        else {
-               print "mr $action: $dir\n";
+               if (! $nochdir) {
+                       print "mr $action: $dir\n";
+               }
+               else {
+                       print "mr $action: $dir (in subdir $directory)\n";
+               }
                my $command="set -e; ".$lib.
                        "my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action ".
                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
@@ -447,6 +466,7 @@ __DATA__
 [alias]
        co = checkout
        ci = commit
+       ls = list
 [default]
 lib = \
        error() { \
@@ -485,6 +505,14 @@ diff = \
        else \
                error "unknown repo type"; \
        fi
+log = \
+       if [ -d "$MR_REPO"/.svn ]; then \
+               svn log"$@"; \
+       elif [ -d "$MR_REPO"/.git ]; then \
+               git log "$@"; \
+       else \
+               error "unknown repo type"; \
+       fi
 list = true
 help = \
        if [ ! -e "$MR_PATH" ]; then \