builtin-merge: avoid run_command_v_opt() for recursive and subtree

diff --git a/builtin-log.c b/builtin-log.c
index ae71540546ff53ae3abae12c9702d0a88d769333..1d3c5cbf580f3989d9605ed68f80beb050e19d39 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -218,9 +218,9 @@ static int cmd_log_walk(struct rev_info *rev)
                finish_early_output(rev);
 
        /*
-        * For --check, the exit code is based on CHECK_FAILED being
-        * accumulated in rev->diffopt, so be careful to retain that state
-        * information if replacing rev->diffopt in this loop
+        * For --check and --exit-code, the exit code is based on CHECK_FAILED
+        * and HAS_CHANGES being accumulated in rev->diffopt, so be careful to
+        * retain that state information if replacing rev->diffopt in this loop
         */
        while ((commit = get_revision(rev)) != NULL) {
                log_tree_commit(rev, commit);
@@ -236,7 +236,7 @@ static int cmd_log_walk(struct rev_info *rev)
            DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) {
                return 02;
        }
-       return 0;
+       return diff_result_code(&rev->diffopt, 0);
 }
 
 static int git_log_config(const char *var, const char *value, void *cb)
@@ -470,7 +470,7 @@ static int extra_cc_alloc;
 static void add_header(const char *value)
 {
        int len = strlen(value);
-       while (value[len - 1] == '\n')
+       while (len && value[len - 1] == '\n')
                len--;
        if (!strncasecmp(value, "to: ", 4)) {
                ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
@@ -932,7 +932,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        if (argc > 1)
                die ("unrecognized argument: %s", argv[1]);
 
-       if (!rev.diffopt.output_format)
+       if (!rev.diffopt.output_format
+               || rev.diffopt.output_format == DIFF_FORMAT_PATCH)
                rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;
 
        if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)