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add example of including libs, and mention all the currently available libs
[code/myrepos.git] / mr
diff --git a/mr b/mr
index 97720d456feb136c2f6dc91eb4ef02a1a97d6775..4253be2680db007a6b806c98b008942f711e0391 100755 (executable)
--- a/mr
+++ b/mr
@@ -339,6 +339,9 @@ The "MR_CONFIG" environment variable is set to the .mrconfig file
 that defines the repo being acted on, or, if the repo is not yet in a config
 file, the .mrconfig file that should be modified to register the repo.
 
+The "MR_ACTION" environment variable is set to the command being run
+(update, checkout, etc).
+
 A few parameters have special meanings:
 
 =over 4
@@ -354,8 +357,21 @@ mr is run by joey. The second uses the hours_since function
 (included in mr's built-in library) to skip updating the repo unless it's
 been at least 12 hours since the last update.
 
+  [mystuff]
+  checkout = ...
   skip = test `whoami` != joey
+
+  [linux]
+  checkout = ...
   skip = [ "$1" = update ] && ! hours_since "$1" 12
+Another way to use skip is for a lazy checkout. This makes mr skip
+operating on a repo unless it already exists. To enable the 
+repo, you have to explicitly check it out (using "mr -d foo checkout").
+
+  [foo]
+  checkout = ...
+  skip = lazy
 
 =item order
 
@@ -381,6 +397,14 @@ part of the including file.
 Unlike all other parameters, this parameter does not need to be placed
 within a section.
 
+B<mr> ships several libraries that can be included to add support for
+additional version control type things (unison, git-svn, vcsh, git-fake-bare,
+git-subtree). To include them all, you could use:
+
+  include = cat /usr/share/mr/*
+
+See the individual files for details.
+
 =item deleted
 
 If the "deleted" parameter is set and its command returns true, then
@@ -579,6 +603,7 @@ sub action {
        my $is_update=($action =~ /update/);
 
        $ENV{MR_REPO}=$dir;
+       $ENV{MR_ACTION}=$action;
        
        foreach my $testname ("skip", "deleted") {
                my $testcommand=findcommand($testname, $dir, $topdir, $subdir, $is_checkout);
@@ -1703,6 +1728,13 @@ lib =
        is_bzr_checkout() {
                LANG=C bzr info | egrep -q '^Checkout'
        }
+       lazy() {
+               if [ "$MR_ACTION" = checkout ] || [ -d "$MR_REPO" ]; then
+                       return 1
+               else
+                       return 0
+               fi
+       }
 
 svn_test = test -d "$MR_REPO"/.svn
 git_test = test -d "$MR_REPO"/.git