Merge branch 'js/c-merge-recursive'

* js/c-merge-recursive: (21 commits) discard_cache(): discard index, even if no file was mmap()ed merge-recur: do not die unnecessarily merge-recur: try to merge older merge bases first merge-recur: if there is no common ancestor, fake empty one merge-recur: do not setenv("GIT_INDEX_FILE") merge-recur: do not call git-write-tree merge-recursive: fix rename handling .gitignore: git-merge-recur is a built file. merge-recur: virtual commits shall never be parsed merge-recur: use the unpack_trees() interface instead of exec()ing read-tree merge-recur: fix thinko in unique_path() Makefile: git-merge-recur depends on xdiff libraries. merge-recur: Explain why sha_eq() and struct stage_data cannot go merge-recur: Cleanup last mixedCase variables... merge-recur: Fix compiler warning with -pedantic merge-recur: Remove dead code merge-recur: Get rid of debug code merge-recur: Convert variable names to lower_case Cumulative update of merge-recursive in C recur vs recursive: help testing without touching too many stuff. ... This is an evil merge that removes TEST script from the toplevel.

Merge branch 'js/c-merge-recursive'
* js/c-merge-recursive: (21 commits) discard_cache(): discard index, even if no file was mmap()ed merge-recur: do not die unnecessarily merge-recur: try to merge older merge bases first merge-recur: if there is no common ancestor, fake empty one merge-recur: do not setenv("GIT_INDEX_FILE") merge-recur: do not call git-write-tree merge-recursive: fix rename handling .gitignore: git-merge-recur is a built file. merge-recur: virtual commits shall never be parsed merge-recur: use the unpack_trees() interface instead of exec()ing read-tree merge-recur: fix thinko in unique_path() Makefile: git-merge-recur depends on xdiff libraries. merge-recur: Explain why sha_eq() and struct stage_data cannot go merge-recur: Cleanup last mixedCase variables... merge-recur: Fix compiler warning with -pedantic merge-recur: Remove dead code merge-recur: Get rid of debug code merge-recur: Convert variable names to lower_case Cumulative update of merge-recursive in C recur vs recursive: help testing without touching too many stuff. ... This is an evil merge that removes TEST script from the toplevel.
1e49cb8a · Junio C Hamano · d5d0a0e7 · eed94a57 · 1e49cb8a · 1e49cb8a
7 changed file
--- a/.gitignore
+++ b/.gitignore
@@ -62,6 +62,7 @@ git-merge-tree
 git-merge-octopus
 git-merge-one-file
 git-merge-ours
+git-merge-recur
 git-merge-recursive
 git-merge-resolve
 git-merge-stupid

--- a/Makefile
+++ b/Makefile
@@ -196,6 +196,7 @@ PROGRAMS = \
 	git-upload-pack$X git-verify-pack$X \
 	git-pack-redundant$X git-var$X \
 	git-describe$X git-merge-tree$X git-blame$X git-imap-send$X \
+	git-merge-recur$X \
 	$(EXTRA_PROGRAMS)

 # Empty...
@@ -711,6 +712,11 @@ git-http-push$X: revision.o http.o http-push.o $(GITLIBS)
 	$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
 		$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)

+merge-recursive.o path-list.o: path-list.h
+git-merge-recur$X: merge-recursive.o path-list.o $(GITLIBS)
+	$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
+		$(LIBS)
+
 $(LIB_OBJS) $(BUILTIN_OBJS): $(LIB_H)
 $(patsubst git-%$X,%.o,$(PROGRAMS)): $(LIB_H) $(wildcard */*.h)
 $(DIFF_OBJS): diffcore.h
@@ -870,7 +876,7 @@ check-docs::
 	do \
 		case "$$v" in \
 		git-merge-octopus | git-merge-ours | git-merge-recursive | \
-		git-merge-resolve | git-merge-stupid | \
+		git-merge-resolve | git-merge-stupid | git-merge-recur | \
 		git-ssh-pull | git-ssh-push ) continue ;; \
 		esac ; \
 		test -f "Documentation/$$v.txt" || \

--- a/cache.h
+++ b/cache.h
@@ -145,6 +145,7 @@ extern void verify_non_filename(const char *prefix, const char *name);
 extern int read_cache(void);
 extern int read_cache_from(const char *path);
 extern int write_cache(int newfd, struct cache_entry **cache, int entries);
+extern int discard_cache(void);
 extern int verify_path(const char *path);
 extern int cache_name_pos(const char *name, int namelen);
 #define ADD_CACHE_OK_TO_ADD 1		/* Ok to add */

--- a/git-merge.sh
+++ b/git-merge.sh
@@ -9,15 +9,20 @@ USAGE='[-n] [--no-commit] [--squash] [-s <strategy>]... <merge-message> <head> <
 LF='
 '

-all_strategies='recursive octopus resolve stupid ours'
-default_twohead_strategies='recursive'
+all_strategies='recursive recur octopus resolve stupid ours'
+case "${GIT_USE_RECUR_FOR_RECURSIVE}" in
+'')
+	default_twohead_strategies=recursive ;;
+?*)
+	default_twohead_strategies=recur ;;
+esac
 default_octopus_strategies='octopus'
 no_trivial_merge_strategies='ours'
 use_strategies=

 index_merge=t
 if test "@@NO_PYTHON@@"; then
-	all_strategies='resolve octopus stupid ours'
+	all_strategies='recur resolve octopus stupid ours'
 	default_twohead_strategies='resolve'
 fi

@@ -117,6 +122,10 @@ do
 			strategy="$2"
 			shift ;;
 		esac
+		case "$strategy,${GIT_USE_RECUR_FOR_RECURSIVE}" in
+		recursive,?*)
+			strategy=recur ;;
+		esac
 		case " $all_strategies " in
 		*" $strategy "*)
 			use_strategies="$use_strategies$strategy " ;;

--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -35,7 +35,13 @@ If you would prefer to skip this patch, instead run \"git rebase --skip\".
 To restore the original branch and stop rebasing run \"git rebase --abort\".
 "
 unset newbase
-strategy=recursive
+case "${GIT_USE_RECUR_FOR_RECURSIVE}" in
+'')
+	strategy=recursive ;;
+?*)
+	strategy=recur ;;
+esac
+
 do_merge=
 dotest=$GIT_DIR/.dotest-merge
 prec=4
@@ -200,6 +206,11 @@ do
 	shift
 done

+case "$strategy,${GIT_USE_RECUR_FOR_RECURSIVE}" in
+recursive,?*)
+	strategy=recur ;;
+esac
+
 # Make sure we do not have .dotest
 if test -z "$do_merge"
 then

--- a/merge-recursive.c
+++ b/merge-recursive.c
--- a/read-cache.c
+++ b/read-cache.c
@@ -842,6 +842,23 @@ int read_cache_from(const char *path)
 	die("index file corrupt");
 }

+int discard_cache()
+{
+	int ret;
+
+	active_nr = active_cache_changed = 0;
+	index_file_timestamp = 0;
+	cache_tree_free(&active_cache_tree);
+	if (cache_mmap == NULL)
+		return 0;
+	ret = munmap(cache_mmap, cache_mmap_size);
+	cache_mmap = NULL;
+	cache_mmap_size = 0;
+
+	/* no need to throw away allocated active_cache */
+	return ret;
+}
+
 #define WRITE_BUFFER_SIZE 8192
 static unsigned char write_buffer[WRITE_BUFFER_SIZE];
 static unsigned long write_buffer_len;