rebase: support automatic notes copying

diff --git a/builtin-merge.c b/builtin-merge.c
index 9f60ffa2cd32fd78c04d81135cee42b584627e7c..3aaec7bed76af9efdfe5647be0da64373db2011e 100644 (file)
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -51,6 +51,8 @@ static struct commit_list *remoteheads;
 static unsigned char head[20], stash[20];
 static struct strategy **use_strategies;
 static size_t use_strategies_nr, use_strategies_alloc;
+static const char **xopts;
+static size_t xopts_nr, xopts_alloc;
 static const char *branch;
 static int verbosity;
 static int allow_rerere_auto;
@@ -148,6 +150,17 @@ static int option_parse_strategy(const struct option *opt,
        return 0;
 }
 
+static int option_parse_x(const struct option *opt,
+                         const char *arg, int unset)
+{
+       if (unset)
+               return 0;
+
+       ALLOC_GROW(xopts, xopts_nr + 1, xopts_alloc);
+       xopts[xopts_nr++] = xstrdup(arg);
+       return 0;
+}
+
 static int option_parse_n(const struct option *opt,
                          const char *arg, int unset)
 {
@@ -175,6 +188,8 @@ static struct option builtin_merge_options[] = {
        OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
        OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
                "merge strategy to use", option_parse_strategy),
+       OPT_CALLBACK('X', "strategy-option", &xopts, "option=value",
+               "option for selected merge strategy", option_parse_x),
        OPT_CALLBACK('m', "message", &merge_msg, "message",
                "message to be used for the merge commit (if any)",
                option_parse_message),
@@ -537,7 +552,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
                              const char *head_arg)
 {
        const char **args;
-       int i = 0, ret;
+       int i = 0, x = 0, ret;
        struct commit_list *j;
        struct strbuf buf = STRBUF_INIT;
        int index_fd;
@@ -566,7 +581,20 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
 
                init_merge_options(&o);
                if (!strcmp(strategy, "subtree"))
-                       o.subtree_merge = 1;
+                       o.subtree_shift = "";
+
+               for (x = 0; x < xopts_nr; x++) {
+                       if (!strcmp(xopts[x], "ours"))
+                               o.recursive_variant = MERGE_RECURSIVE_OURS;
+                       else if (!strcmp(xopts[x], "theirs"))
+                               o.recursive_variant = MERGE_RECURSIVE_THEIRS;
+                       else if (!strcmp(xopts[x], "subtree"))
+                               o.subtree_shift = "";
+                       else if (!prefixcmp(xopts[x], "subtree="))
+                               o.subtree_shift = xopts[x]+8;
+                       else
+                               die("Unknown option for merge-recursive: -X%s", xopts[x]);
+               }
 
                o.branch1 = head_arg;
                o.branch2 = remoteheads->item->util;
@@ -584,10 +612,16 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
                rollback_lock_file(lock);
                return clean ? 0 : 1;
        } else {
-               args = xmalloc((4 + commit_list_count(common) +
+               args = xmalloc((4 + xopts_nr + commit_list_count(common) +
                                        commit_list_count(remoteheads)) * sizeof(char *));
                strbuf_addf(&buf, "merge-%s", strategy);
                args[i++] = buf.buf;
+               for (x = 0; x < xopts_nr; x++) {
+                       char *s = xmalloc(strlen(xopts[x])+2+1);
+                       strcpy(s, "--");
+                       strcpy(s+2, xopts[x]);
+                       args[i++] = s;
+               }
                for (j = common; j; j = j->next)
                        args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
                args[i++] = "--";
@@ -598,6 +632,8 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
                ret = run_command_v_opt(args, RUN_GIT_CMD);
                strbuf_release(&buf);
                i = 1;
+               for (x = 0; x < xopts_nr; x++)
+                       free((void *)args[i++]);
                for (j = common; j; j = j->next)
                        free((void *)args[i++]);
                i += 2;