add hooks to enable auto handing of merge conflicts

These hooks before and after the actual checkout process
will enable a pair of hook scripts to automatically handle
conflicts and potentially allow the checkout of repositories
over existing file sets

diff --git a/doc/hooks b/doc/hooks
index 54ff795611c0081e11eca8d16064f0f57f2ac60e..30cd373a50b492b472edffe498e9ac63cff45516 100644 (file)
--- a/doc/hooks
+++ b/doc/hooks
@@ -14,6 +14,12 @@ Available hooks are:
 * post-enter
 * pre-init
 * post-init
+* pre-merge
+    Use this hook to detect and handle merge conflicts before vcsh's native code
+       finds and errors on them. This is useful for allowing clones on top of existing
+       files.
+* post-merge
+    Use this hook to finish handling any merge conflicts found in the pre-merge hook.
 * pre-pull
 * post-pull
 * pre-push

diff --git a/vcsh b/vcsh
index 6ce5320a620e098d2907c127261c65a0a334a939..a6d82138307a2d00e93f8c944b3f93ac03e69316 100755 (executable)
--- a/vcsh
+++ b/vcsh
@@ -152,6 +152,7 @@ clone() {
                exit
        fi
        git fetch
+       hook pre-merge
        git ls-tree -r --name-only origin/master | (while read object; do
                [ -e "$object" ] &&
                        error "'$object' exists." &&
@@ -161,6 +162,7 @@ clone() {
                fatal "will stop after fetching and not try to merge!
   Once this situation has been resolved, run 'vcsh run $VCSH_REPO_NAME git pull' to finish cloning." 17
        git merge origin/master
+       hook post-merge
        hook post-clone
        retire
        hook post-clone-retired