docs

[code/myrepos.git] / mr

diff --git a/mr b/mr
index 823e3df3ea1f989c9930684e8a12528409af804a..8eb0374babbca924fb65e2191f9c7a7ed64a707b 100755 (executable)
--- a/mr
+++ b/mr
@@ -16,17 +16,29 @@ B<mr> [options] commit [-m "message"]
 
 B<mr> [options] diff
 
 
 B<mr> [options] diff
 

+B<mr> [options] log
+
+B<mr> [options] register repository
+
+B<mr> [options] config section [parameter=[value] ...]
+

 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
 
 B<mr> is a Multiple Repository management tool. It allows you to register a
 set of repositories in a .mrconfig file, and then checkout, update, or
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
 
 B<mr> is a Multiple Repository management tool. It allows you to register a
 set of repositories in a .mrconfig file, and then checkout, update, or

-perform other actions on all of the repositories at once.
+perform other actions on the repositories as if they were one big
+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".
 
 
 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:
 
 The predefined commands should be fairly familiar to users of any revision
 control system:
 


@@ -58,10 +70,29 @@ The optional -m parameter allows specifying a commit message.
 
 Show a diff of uncommitted changes.
 
 
 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.
 
 
 List the repositories that mr will act on.
 

+=item register
+
+The next parameter is the directory of an existing repository. The
+repository will be registered in the mrconfig file.
+
+=item config
+
+Modifies the mrconfig file. The next parameter is the name of the section
+to add or modify, and it is followed by one or more instances of
+"parameter=value". Use "parameter=" to remove a parameter. 
+
+For example, to add (or edit) a repository in src/foo:
+
+  mr config src/foo checkout="svn co svn://example.com/foo/trunk foo"
+

 =item help
 
 Displays this help.
 =item help
 
 Displays this help.


@@ -69,16 +100,13 @@ Displays this help.
 =back
 
 Actions can be abbreviated to any unambiguous subsctring, so
 =back
 
 Actions can be abbreviated to any unambiguous subsctring, so

-"mr st" is equivilant to "mr status".
+"mr st" is equivilant to "mr status", and "mr up" is equivilant to "mr
+update"

 
 

-B<mr> operates on all registered repsitories at or below your working
-directory. Or, if you are in a subdirectory of a repository, it will act on
-only that repository.
-
-Additional parameters can be passed to other commands than "commit", they
-will be passed on unchanged to the underlying revision control system.
-This is mostly useful if the repositories mr will act on all use the same
-revision control system.
+Additional parameters can be passed to most commands, and are passed on
+unchanged to the underlying revision control system. This is mostly useful
+if the repositories mr will act on all use the same revision control
+system.

 
 =head1 OPTIONS
 
 
 =head1 OPTIONS
 


@@ -87,12 +115,11 @@ revision control system.
 =item -d directory
 
 Specifies the topmost directory that B<mr> should work in. The default is
 =item -d directory
 
 Specifies the topmost directory that B<mr> should work in. The default is

-the current working directory. B<mr> will operate on all registered
-repositories at or under the directory.
+the current working directory.

 
 =item -c mrconfig
 
 
 =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
 directory.
 
 =item -v


@@ -104,60 +131,75 @@ Be verbose.
 =head1 FILES
 
 B<mr> is configured by .mrconfig files. It starts by reading the .mrconfig
 =head1 FILES
 
 B<mr> is configured by .mrconfig files. It starts by reading the .mrconfig

-file in your home directory. Each repository specified in a .mrconfig file
-can also have its own .mrconfig file in its root directory that can
-optionally be used as well. So you could have a ~/.mrconfig that registers a
-repository ~/src, that itself contains a ~/src/.mrconfig file, that in turn
-registers several additional repositories.
+file in your home directory, and this can in turn chain load .mrconfig files
+from repositories.
+
+Here is an example .mrconfig file:
+
+  [src]
+  checkout = svn co svn://svn.example.com/src/trunk src
+  chain = true
+
+  [src/linux-2.6]
+  checkout = git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

 
 The .mrconfig file uses a variant of the INI file format. Lines starting with
 "#" are comments. Lines ending with "\" are continued on to the next line.
 
 The .mrconfig file uses a variant of the INI file format. Lines starting with
 "#" are comments. Lines ending with "\" are continued on to the next line.

-Sections specify where each repository is located, relative to the
-directory that contains the .mrconfig file.
+
+The "DEFAULT" section allows setting default values for the sections that
+come after it.
+
+The "ALIAS" section allows adding aliases for actions. Each parameter
+is an alias, and its value is the action to use.
+
+All other sections add repositories. The section header specifies the
+directory where the repository is located. This is relative to the directory
+that contains the mrconfig file, but you can also choose to use absolute
+paths.

 
 Within a section, each parameter defines a shell command to run to handle a
 
 Within a section, each parameter defines a shell command to run to handle a

-given action. Note that these shell commands are run in a "set -e" shell
+given action. mr contains default handlers for the "update", "status", and
+"commit" actions, so normally you only need to specify what to do for
+"checkout".
+
+Note that these shell commands are run in a "set -e" shell

 environment, where any additional parameters you pass are available in
 environment, where any additional parameters you pass are available in

-"$@". B<mr> cds into the repository directory before running
-a command, except for the "checkout" command, which is run in the parent
-of the repository directory, since the repository isn't checked out yet.
+"$@". The "checkout" command is run in the parent of the repository
+directory, since the repository isn't checked out yet. All other commands
+are run inside the repository, though not necessarily at the top of it.
+The "MR_REPO" environment variable is set to the path to the top of the
+repository.
+
+A few parameters have special meanings:
+
+=over 4
+
+=item skip
+
+If the "skip" parameter is set and its command returns nonzero, then B<mr>
+will skip acting on that repository.
+
+=item chain

 
 

-There are three special parameters. If the "skip" parameter is set and
-its command returns nonzero, then B<mr> will skip acting on that repository.

 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
 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.
+should avoid chaining from repositories with untrusted committers.)

 
 

-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".
+=item deleted

 
 

-The "alias" section allows adding aliases for commands. Each parameter
-is an alias, and its value is the command to run.
+If the "deleted" parameter is set and its command returns nonzero, then
+B<mr> will treat the repository as deleted. It won't ever actually delete
+the repository, but it will warn if it sees the repsoitory's directory.
+This is useful when one mrconfig file is shared amoung multiple machines,
+to keep track of and remember to delete old repositories.

 
 

-For example:
+=item lib

 
 

-  [src]
-  checkout = svn co svn://svn.example.com/src/trunk src
-  chain = true
-
-  [src/linux-2.6]
-  skip = small
-  checkout = git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
+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 for other commands
+to use.

 
 

-  [default]
-  lib = \
-  small() {
-       case "$(hostname)" in; \
-       slug|snail); \
-               return 0; ;; ; \
-       esac; \
-       return 1; \
-  }
+=back

 
 =head1 AUTHOR
 
 
 =head1 AUTHOR
 


@@ -183,9 +225,9 @@ my %alias;
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(

-       "d=s" => sub { $directory=abs_path($_[1]) },
-       "c=s" => \$config,
-       "v" => \$verbose,
+       "d|directory=s" => sub { $directory=abs_path($_[1]) },
+       "c|config=s" => \$config,
+       "verbose" => \$verbose,

 );
 if (! $result || @ARGV < 1) {
        die("Usage: mr [-d directory] action [params ...]\n".
 );
 if (! $result || @ARGV < 1) {
        die("Usage: mr [-d directory] action [params ...]\n".


@@ -205,57 +247,118 @@ eval {
 
 # alias expansion and command stemming
 my $action=shift @ARGV;
 
 # alias expansion and command stemming
 my $action=shift @ARGV;

+if (exists $alias{$action}) {
+       $action=$alias{$action};
+}

 if (! exists $knownactions{$action}) {
 if (! exists $knownactions{$action}) {

-       if (exists $alias{$action}) {
-               $action=$alias{$action};
+       my @matches = grep { /^\Q$action\E/ }
+               keys %knownactions, keys %alias;
+       if (@matches == 1) {
+               $action=$matches[0];
+       }
+       elsif (@matches == 0) {
+               die "mr: unknown action \"$action\" (known actions: ".
+                       join(", ", sort keys %knownactions).")\n";

        }
        else {
        }
        else {

-               my @matches = grep { /^\Q$action\E/ }
-                       keys %knownactions, keys %alias;
-               if (@matches == 1) {
-                       $action=$matches[0];
+               die "mr: ambiguous action \"$action\" (matches: ".
+                       join(", ", @matches).")\n";
+       }
+}
+
+if ($action eq 'help') {
+       exec($config{''}{DEFAULT}{$action}) || die "exec: $!";
+}
+elsif ($action eq 'config') {
+       if (@ARGV < 2) {
+               die "mr config: not enough parameters\n";
+       }
+       my $section=shift;
+       if ($section=~/^\//) {
+               # try to convert to a path relative to $config's dir
+               my ($dir)=$config=~/^(.*\/)[^\/]+$/;
+               if ($section=~/^\Q$dir\E(.*)/) {
+                       $section=$1;
+               }
+       }
+       my %fields;
+       foreach (@ARGV) {
+               if (/^([^=]+)=(.*)$/) {
+                       $fields{$1}=$2;

                }
                else {
                }
                else {

-                       die "mr: ambiguous action \"$action\" (matches @matches)\n";
+                       die "mr config: expected parameter=value, not \"$_\"\n";

                }
        }
                }
        }

+       modifyconfig($config, $section, %fields);
+       exit 0;

 }
 }

-
-if ($action eq 'help') {
-       exec($config{''}{default}{help});
+elsif ($action eq 'register') {
+       my $command="set -e; ".$config{''}{DEFAULT}{lib}."\n".
+               "my_action(){ $config{''}{DEFAULT}{$action}\n }; my_action ".
+               join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
+       print STDERR "mr $action: running >>$command<<\n" if $verbose;
+       exec($command) || die "exec: $!";

 }
 
 }
 

-# handle being in a subdir of a repository
+# work out what repos to act on
+my @repos;
+my $nochdir=0;

 foreach my $topdir (sort keys %config) {
        foreach my $subdir (sort keys %{$config{$topdir}}) {
 foreach my $topdir (sort keys %config) {
        foreach my $subdir (sort keys %{$config{$topdir}}) {

-               if ($directory =~ /^\Q$topdir$subdir\E\//) {
-                       $directory=$topdir.$subdir;
+               next if $subdir eq 'DEFAULT';
+               my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
+               my $d=$directory;
+               $dir.="/" unless $dir=~/\/$/;
+               $d.="/" unless $d=~/\/$/;
+               next if $dir ne $directory && $dir !~ /^\Q$directory\E/;
+               push @repos, [$dir, $topdir, $subdir];
+       }
+}
+if (! @repos) {
+       # fallback to find a leaf repo
+       LEAF: foreach my $topdir (reverse sort keys %config) {
+               foreach my $subdir (reverse sort keys %{$config{$topdir}}) {
+                       next if $subdir eq 'DEFAULT';
+                       my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
+                       my $d=$directory;
+                       $dir.="/" unless $dir=~/\/$/;
+                       $d.="/" unless $d=~/\/$/;
+                       if ($d=~/^\Q$dir\E/) {
+                               push @repos, [$dir, $topdir, $subdir];
+                               last LEAF;
+                       }

                }
        }
                }
        }

+       $nochdir=1;

 }
 
 my (@failed, @successful, @skipped);
 }
 
 my (@failed, @successful, @skipped);

-foreach my $topdir (sort keys %config) {
-       foreach my $subdir (sort keys %{$config{$topdir}}) {
-               next if $subdir eq 'default';
-               
-               my $dir=$topdir.$subdir;
-
-               if (defined $directory &&
-                   $dir ne $directory &&
-                   $dir !~ /^\Q$directory\E\//) {
-                       next;
-               }
-
-               action($action, $dir, $topdir, $subdir);
-       }
+foreach my $repo (@repos) {
+       action($action, @$repo);

 }
 
 sub action {
        my ($action, $dir, $topdir, $subdir) = @_;
        
        my $lib= exists $config{$topdir}{$subdir}{lib} ?
 }
 
 sub action {
        my ($action, $dir, $topdir, $subdir) = @_;
        
        my $lib= exists $config{$topdir}{$subdir}{lib} ?

-                       $config{$topdir}{$subdir}{lib} : "";
+                       $config{$topdir}{$subdir}{lib}."\n" : "";
+
+       if (exists $config{$topdir}{$subdir}{deleted}) {
+               if (! -d $dir) {
+                       next;
+               }
+               else {
+                       my $test="set -e;".$lib.$config{$topdir}{$subdir}{deleted};
+                       print "mr $action: running deleted test >>$test<<\n" if $verbose;
+                       my $ret=system($test);
+                       if ($ret >> 8 == 0) {
+                               print STDERR "mr error: $dir should be deleted yet still exists\n\n";
+                               push @failed, $dir;
+                               return;
+                       }
+               }
+       }

 
        if ($action eq 'checkout') {
                if (-d $dir) {
 
        if ($action eq 'checkout') {
                if (-d $dir) {


@@ -271,33 +374,42 @@ sub action {
                }
        }
        
                }
        }
        

-       if (! chdir($dir)) {
-               print STDERR "mr $action: failed to chdir to $dir: $!\n";
-               push @skipped, $dir;
-       }
+       $ENV{MR_REPO}=$dir;

 
        if (exists $config{$topdir}{$subdir}{skip}) {
 
        if (exists $config{$topdir}{$subdir}{skip}) {

-               my $ret=system($lib.$config{$topdir}{$subdir}{skip});
+               my $test="set -e;".$lib.$config{$topdir}{$subdir}{skip};
+               print "mr $action: running skip test >>$test<<\n" if $verbose;
+               my $ret=system($test);

                if ($ret >> 8 == 0) {
                        print "mr $action: $dir skipped per config file\n" if $verbose;
                        push @skipped, $dir;
                        return;
                }
        }
                if ($ret >> 8 == 0) {
                        print "mr $action: $dir skipped per config file\n" if $verbose;
                        push @skipped, $dir;
                        return;
                }
        }

-
-       if (! exists $config{$topdir}{$subdir}{$action}) {
+       
+       if (! $nochdir && ! chdir($dir)) {
+               print STDERR "mr $action: failed to chdir to $dir: $!\n";
+               push @failed, $dir;
+       }
+       elsif (! exists $config{$topdir}{$subdir}{$action}) {

                print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
                push @skipped, $dir;
        }
        else {
                print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
                push @skipped, $dir;
        }
        else {

-               print "mr $action: $dir\n";
+               if (! $nochdir) {
+                       print "mr $action: $topdir$subdir\n";
+               }
+               else {
+                       print "mr $action: $topdir$subdir (in subdir $directory)\n";
+               }

                my $command="set -e; ".$lib.
                my $command="set -e; ".$lib.

-                       "my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action ".
+                       "my_action(){ $config{$topdir}{$subdir}{$action}\n }; my_action ".

                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);

+               print STDERR "mr $action: running >>$command<<\n" if $verbose;

                my $ret=system($command);
                if ($ret != 0) {
                my $ret=system($command);
                if ($ret != 0) {

-                       print STDERR "mr $action: failed to run: $command\n" if $verbose;
-                       push @failed, $topdir.$subdir;
+                       print STDERR "mr $action: failed ($ret)\n" if $verbose;
+                       push @failed, $dir;

                        if ($ret >> 8 != 0) {
                                print STDERR "mr $action: command failed\n";
                        }
                        if ($ret >> 8 != 0) {
                                print STDERR "mr $action: command failed\n";
                        }


@@ -322,6 +434,9 @@ sub showstat {
        }
        return;
 }
        }
        return;
 }

+if (! @successful && ! @failed && ! @skipped) {
+       die "mr $action: no repositories found to work on\n";
+}

 print "mr $action: finished (".join("; ",
        showstat($#successful+1, "successful", "successful"),
        showstat($#failed+1, "failed", "failed"),
 print "mr $action: finished (".join("; ",
        showstat($#successful+1, "successful", "successful"),
        showstat($#failed+1, "failed", "failed"),


@@ -348,7 +463,6 @@ sub loadconfig {
                $dir="";
        }
        else {
                $dir="";
        }
        else {

-               # $f might be a symlink

                my $absf=abs_path($f);
                if ($loaded{$absf}) {
                        return;
                my $absf=abs_path($f);
                if ($loaded{$absf}) {
                        return;


@@ -367,8 +481,8 @@ sub loadconfig {
                my $parent=$dir;
                while ($parent=~s/^(.*)\/[^\/]+\/?$/$1/) {
                        if (exists $config{$parent} &&
                my $parent=$dir;
                while ($parent=~s/^(.*)\/[^\/]+\/?$/$1/) {
                        if (exists $config{$parent} &&

-                           exists $config{$parent}{default}) {
-                               $config{$dir}{default}={ %{$config{$parent}{default}} };
+                           exists $config{$parent}{DEFAULT}) {
+                               $config{$dir}{DEFAULT}={ %{$config{$parent}{DEFAULT}} };

                                last;
                        }
                }
                                last;
                        }
                }


@@ -386,31 +500,31 @@ sub loadconfig {
                        my $value=$2;
 
                        # continuation line
                        my $value=$2;
 
                        # continuation line

-                       while ($value=~/(.*)\\$/) {
-                               $value=$1.<$in>;
+                       while ($value=~/(.*)\\$/s) {
+                               $value=$1."\n".<$in>;

                                chomp $value;
                        }
 
                        if (! defined $section) {
                                die "$f line $.: parameter ($parameter) not in section\n";
                        }
                                chomp $value;
                        }
 
                        if (! defined $section) {
                                die "$f line $.: parameter ($parameter) not in section\n";
                        }

-                       if ($section ne 'alias' &&
+                       if ($section ne 'ALIAS' &&

                            ! exists $config{$dir}{$section} &&
                            ! exists $config{$dir}{$section} &&

-                           exists $config{$dir}{default}) {
+                           exists $config{$dir}{DEFAULT}) {

                                # copy in defaults
                                # copy in defaults

-                               $config{$dir}{$section}={ %{$config{$dir}{default}} };
+                               $config{$dir}{$section}={ %{$config{$dir}{DEFAULT}} };

                        }
                        }

-                       if ($section eq 'alias') {
+                       if ($section eq 'ALIAS') {

                                $alias{$parameter}=$value;
                        }
                        elsif ($parameter eq 'lib') {
                                $alias{$parameter}=$value;
                        }
                        elsif ($parameter eq 'lib') {

-                               $config{$dir}{$section}{lib}.=$value." ; ";
+                               $config{$dir}{$section}{lib}.=$value."\n";

                        }
                        else {
                                $config{$dir}{$section}{$parameter}=$value;
                                $knownactions{$parameter}=1;
                                if ($parameter eq 'chain' &&
                        }
                        else {
                                $config{$dir}{$section}{$parameter}=$value;
                                $knownactions{$parameter}=1;
                                if ($parameter eq 'chain' &&

-                                   length $dir && $section ne "default" &&
+                                   length $dir && $section ne "DEFAULT" &&

                                    -e $dir.$section."/.mrconfig" &&
                                    system($value) >> 8 == 0) {
                                        push @toload, $dir.$section."/.mrconfig";
                                    -e $dir.$section."/.mrconfig" &&
                                    system($value) >> 8 == 0) {
                                        push @toload, $dir.$section."/.mrconfig";


@@ -428,54 +542,192 @@ sub loadconfig {
        }
 }
 
        }
 }
 

+sub modifyconfig {
+       my $f=shift;
+       # the section to modify or add
+       my $targetsection=shift;
+       # fields to change in the section
+       # To remove a field, set its value to "".
+       my %changefields=@_;
+
+       my @lines;
+       if (-e $f) {
+               open(my $in, "<", $f) || die "mr: open $f: $!\n";
+               @lines=<$in>;
+               close $in;
+       }
+
+       my $section;
+       my @out;
+       while (@lines) {
+               $_=shift(@lines);
+
+               if (/^\s*\#/ || /^\s*$/) {
+                       push @out, $_;
+               }
+               elsif (/^\s*\[([^\]]*)\]\s*$/) {
+                       if (defined $section && 
+                           $section eq $targetsection) {
+                               my @blanks;
+                               while ($out[$#out] =~ /^\s*$/) {
+                                       unshift @blanks, pop @out;
+                               }
+                               foreach my $field (sort keys %changefields) {
+                                       if (length $changefields{$field}) {
+                                               push @out, "$field = $changefields{$field}\n";
+                                       }
+                               }
+                               push @out, @blanks;
+                       }
+
+                       $section=$1;
+
+                       push @out, $_;
+               }
+               elsif (/^\s*(\w+)\s*=\s(.*)/) {
+                       my $parameter=$1;
+                       my $value=$2;
+
+                       # continuation line
+                       while ($value=~/(.*\\)$/s) {
+                               $value=$1."\n".shift(@lines);
+                               chomp $value;
+                       }
+
+                       if ($section eq $targetsection) {
+                               if (exists $changefields{$parameter}) {
+                                       if (length $changefields{$parameter}) {
+                                               $value=$changefields{$parameter};
+                                       }
+                                       delete $changefields{$parameter};
+                               }
+                       }
+
+                       push @out, "$parameter = $value\n";
+               }
+       }
+
+       if (%changefields) {
+               push @out, "\n[$targetsection]\n";
+               foreach my $field (sort keys %changefields) {
+                       if (length $changefields{$field}) {
+                               push @out, "$field = $changefields{$field}\n";
+                       }
+               }
+       }
+
+       open(my $out, ">", $f) || die "mr: write $f: $!\n";
+       print $out @out;
+       close $out;     
+}
+

 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
 __DATA__
 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
 __DATA__

-[alias]
+[ALIAS]

        co = checkout
        ci = commit
        co = checkout
        ci = commit

-[default]
-lib = \
-       error() { \
-               echo "mr: $@" >&2; \
-               exit 1; \
+       ls = list
+
+[DEFAULT]
+lib =                                                  \
+       error() {                                       \
+               echo "mr: $@" >&2                       \
+               exit 1                                  \

        }
        }

-update = \
-       if [ -d .svn ]; then \
-               svn update "$@"; \
-       elif [ -d .git ]; then \
-               git pull origin master "$@"; \
-       else \
-               error "unknown repo type"; \
+
+update =                                               \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn update "$@"                         \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git pull origin master "$@"             \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr merge "$@"                          \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs update "$@"                         \
+       else                                            \
+               error "unknown repo type"               \

        fi
        fi

-status = \
-       if [ -d .svn ]; then \
-               svn status "$@"; \
-       elif [ -d .git ]; then \
-               git status "$@" || true; \
-       else \
-               error "unknown repo type"; \
+status =                                               \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn status "$@"                         \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git status "$@" || true                 \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr status "$@"                         \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs status "$@"                         \
+       else                                            \
+               error "unknown repo type"               \

        fi
        fi

-commit = \
-       if [ -d .svn ]; then \
-               svn commit "$@"; \
-       elif [ -d .git ]; then \
-               git commit -a "$@" && git push --all; \
-       else \
-               error "unknown repo type"; \
+commit =                                               \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn commit "$@"                         \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git commit -a "$@" && git push --all    \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr commit "$@" && bzr push             \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs commit "$@"                         \
+       else                                            \
+               error "unknown repo type"               \

        fi
        fi

-diff = \
-       if [ -d .svn ]; then \
-               svn diff "$@"; \
-       elif [ -d .git ]; then \
-               git diff "$@"; \
-       else \
-               error "unknown repo type"; \
+diff =                                                 \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn diff "$@"                           \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git diff "$@"                           \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr diff "$@"                           \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs diff "$@"                           \
+       else                                            \
+               error "unknown repo type"               \
+       fi
+log =                                                  \
+       if [ -d "$MR_REPO"/.svn ]; then                 \
+               svn log"$@"                             \
+       elif [ -d "$MR_REPO"/.git ]; then               \
+               git log "$@"                            \
+       elif [ -d "$MR_REPO"/.bzr ]; then               \
+               bzr log "$@"                            \
+       elif [ -d "$MR_REPO"/CVS ]; then                \
+               cvs log "$@"                            \
+       else                                            \
+               error "unknown repo type"               \
+       fi
+register =                                                             \
+       if [ -z "$1" ]; then                                            \
+               error "repository directory not specified"              \
+       fi                                                              \
+       cd "$1"                                                         \
+       basedir="$(basename $(pwd))"                                    \
+       if [ -d .svn ]; then                                            \
+               url=$(svn info . |                                      \
+                     grep -i ^URL: | cut -d ' ' -f 2)                  \
+               if [ -z "$url" ]; then                                  \
+                       error "cannot determine svn url"                \
+               fi                                                      \
+               echo "Registering svn url: $url"                        \
+               mr config "$(pwd)" checkout="svn co $url $basedir"      \
+       elif [ -d .git ]; then                                          \
+               url=$(git-config --get remote.origin.url)               \
+               if [ -z "$url" ]; then                                  \
+                       error "cannot determine git url"                \
+               fi                                                      \
+               echo "Registering git url: $url"                        \
+               mr config "$(pwd)" checkout="git clone $url $basedir"   \
+       else                                                            \
+               error "unable to register this repo type"               \

        fi
 list = true
        fi
 list = true

-help = \
-       if [ ! -e "$MR_PATH" ]; then \
-               error "cannot find program path";\
-       fi; \
-       (pod2man -c mr "$MR_PATH" | man -l -) || \
+config = 
+help =                                                 \
+       if [ ! -e "$MR_PATH" ]; then                    \
+               error "cannot find program path"        \
+       fi                                              \
+       (pod2man -c mr "$MR_PATH" | man -l -) ||        \

                error "pod2man or man failed"
                error "pod2man or man failed"

+
+ed = echo "A horse is a horse, of course, of course.."
+T = echo "I pity the fool."