Merge remote branch 'remotes/trast-doc/for-next'

diff --git a/builtin-merge.c b/builtin-merge.c
index 921453949a1bdccd796b43f29137f419b6416baf..9f60ffa2cd32fd78c04d81135cee42b584627e7c 100644 (file)
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -24,6 +24,7 @@
 #include "rerere.h"
 #include "help.h"
 #include "merge-recursive.h"
+#include "resolve-undo.h"
 
 #define DEFAULT_TWOHEAD (1<<0)
 #define DEFAULT_OCTOPUS (1<<1)
@@ -43,6 +44,7 @@ static const char * const builtin_merge_usage[] = {
 
 static int show_diffstat = 1, option_log, squash;
 static int option_commit = 1, allow_fast_forward = 1;
+static int fast_forward_only;
 static int allow_trivial = 1, have_message;
 static struct strbuf merge_msg;
 static struct commit_list *remoteheads;
@@ -51,6 +53,7 @@ static struct strategy **use_strategies;
 static size_t use_strategies_nr, use_strategies_alloc;
 static const char *branch;
 static int verbosity;
+static int allow_rerere_auto;
 
 static struct strategy all_strategy[] = {
        { "recursive",  DEFAULT_TWOHEAD | NO_TRIVIAL },
@@ -166,7 +169,10 @@ static struct option builtin_merge_options[] = {
        OPT_BOOLEAN(0, "commit", &option_commit,
                "perform a commit if the merge succeeds (default)"),
        OPT_BOOLEAN(0, "ff", &allow_fast_forward,
-               "allow fast forward (default)"),
+               "allow fast-forward (default)"),
+       OPT_BOOLEAN(0, "ff-only", &fast_forward_only,
+               "abort if fast-forward is not possible"),
+       OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
        OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
                "merge strategy to use", option_parse_strategy),
        OPT_CALLBACK('m', "message", &merge_msg, "message",
@@ -264,6 +270,7 @@ static void squash_message(void)
        struct strbuf out = STRBUF_INIT;
        struct commit_list *j;
        int fd;
+       struct pretty_print_context ctx = {0};
 
        printf("Squash commit -- not updating HEAD\n");
        fd = open(git_path("SQUASH_MSG"), O_WRONLY | O_CREAT, 0666);
@@ -285,13 +292,15 @@ static void squash_message(void)
        if (prepare_revision_walk(&rev))
                die("revision walk setup failed");
 
+       ctx.abbrev = rev.abbrev;
+       ctx.date_mode = rev.date_mode;
+
        strbuf_addstr(&out, "Squashed commit of the following:\n");
        while ((commit = get_revision(&rev)) != NULL) {
                strbuf_addch(&out, '\n');
                strbuf_addf(&out, "commit %s\n",
                        sha1_to_hex(commit->object.sha1));
-               pretty_print_commit(rev.commit_format, commit, &out, rev.abbrev,
-                       NULL, NULL, rev.date_mode, 0);
+               pretty_print_commit(rev.commit_format, commit, &out, &ctx);
        }
        if (write(fd, out.buf, out.len) < 0)
                die_errno("Writing SQUASH_MSG");
@@ -598,6 +607,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
                discard_cache();
                if (read_cache() < 0)
                        die("failed to read the cache");
+               resolve_undo_clear();
                return ret;
        }
 }
@@ -612,11 +622,10 @@ static void count_diff_files(struct diff_queue_struct *q,
 
 static int count_unmerged_entries(void)
 {
-       const struct index_state *state = &the_index;
        int i, ret = 0;
 
-       for (i = 0; i < state->cache_nr; i++)
-               if (ce_stage(state->cache[i]))
+       for (i = 0; i < active_nr; i++)
+               if (ce_stage(active_cache[i]))
                        ret++;
 
        return ret;
@@ -784,7 +793,7 @@ static int suggest_conflicts(void)
                }
        }
        fclose(fp);
-       rerere();
+       rerere(allow_rerere_auto);
        printf("Automatic merge failed; "
                        "fix conflicts and then commit the result.\n");
        return 1;
@@ -841,12 +850,22 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
        const char *best_strategy = NULL, *wt_strategy = NULL;
        struct commit_list **remotes = &remoteheads;
 
-       if (file_exists(git_path("MERGE_HEAD")))
-               die("You have not concluded your merge. (MERGE_HEAD exists)");
-       if (read_cache_unmerged())
-               die("You are in the middle of a conflicted merge."
-                               " (index unmerged)");
+       if (read_cache_unmerged()) {
+               die_resolve_conflict("merge");
+       }
+       if (file_exists(git_path("MERGE_HEAD"))) {
+               /*
+                * There is no unmerged entry, don't advise 'git
+                * add/rm <file>', just 'git commit'.
+                */
+               if (advice_resolve_conflict)
+                       die("You have not concluded your merge (MERGE_HEAD exists).\n"
+                           "Please, commit your changes before you can merge.");
+               else
+                       die("You have not concluded your merge (MERGE_HEAD exists).");
+       }
 
+       resolve_undo_clear();
        /*
         * Check if we are _not_ on a detached HEAD, i.e. if there is a
         * current branch.
@@ -874,6 +893,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
                option_commit = 0;
        }
 
+       if (!allow_fast_forward && fast_forward_only)
+               die("You cannot combine --no-ff with --ff-only.");
+
        if (!argc)
                usage_with_options(builtin_merge_usage,
                        builtin_merge_options);
@@ -1015,7 +1037,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
                                hex,
                                find_unique_abbrev(remoteheads->item->object.sha1,
                                DEFAULT_ABBREV));
-               strbuf_addstr(&msg, "Fast forward");
+               strbuf_addstr(&msg, "Fast-forward");
                if (have_message)
                        strbuf_addstr(&msg,
                                " (no commit created; -m option ignored)");
@@ -1033,16 +1055,16 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
        } else if (!remoteheads->next && common->next)
                ;
                /*
-                * We are not doing octopus and not fast forward.  Need
+                * We are not doing octopus and not fast-forward.  Need
                 * a real merge.
                 */
        else if (!remoteheads->next && !common->next && option_commit) {
                /*
-                * We are not doing octopus, not fast forward, and have
+                * We are not doing octopus, not fast-forward, and have
                 * only one common.
                 */
                refresh_cache(REFRESH_QUIET);
-               if (allow_trivial) {
+               if (allow_trivial && !fast_forward_only) {
                        /* See if it is really trivial. */
                        git_committer_info(IDENT_ERROR_ON_NO_NAME);
                        printf("Trying really trivial in-index merge...\n");
@@ -1081,6 +1103,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
                }
        }
 
+       if (fast_forward_only)
+               die("Not possible to fast-forward, aborting.");
+
        /* We are going to make a new commit. */
        git_committer_info(IDENT_ERROR_ON_NO_NAME);