mergetool--lib: improve show_tool_help() output

diff --git a/commit.c b/commit.c
index 0ea441d13b1430231f30d9524aed88b9719290b6..213bc98c183b820c43c66d67a15133b4a401f6a4 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -9,6 +9,8 @@
 #include "gpg-interface.h"
 #include "mergesort.h"
 
+static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **);
+
 int save_commit_buffer = 1;
 
 const char *commit_type = "commit";
@@ -607,6 +609,7 @@ static struct commit *interesting(struct commit_list *list)
        return NULL;
 }
 
+/* all input commits in one and twos[] must have been parsed! */
 static struct commit_list *paint_down_to_common(struct commit *one, int n, struct commit **twos)
 {
        struct commit_list *list = NULL;
@@ -615,6 +618,8 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n, struc
 
        one->object.flags |= PARENT1;
        commit_list_insert_by_date(one, &list);
+       if (!n)
+               return list;
        for (i = 0; i < n; i++) {
                twos[i]->object.flags |= PARENT2;
                commit_list_insert_by_date(twos[i], &list);
@@ -735,6 +740,8 @@ static int remove_redundant(struct commit **array, int cnt)
        redundant = xcalloc(cnt, 1);
        filled_index = xmalloc(sizeof(*filled_index) * (cnt - 1));
 
+       for (i = 0; i < cnt; i++)
+               parse_commit(array[i]);
        for (i = 0; i < cnt; i++) {
                struct commit_list *common;
 
@@ -1073,8 +1080,9 @@ static int excluded_header_field(const char *field, size_t len, const char **exc
        return 0;
 }
 
-struct commit_extra_header *read_commit_extra_header_lines(const char *buffer, size_t size,
-                                                          const char **exclude)
+static struct commit_extra_header *read_commit_extra_header_lines(
+       const char *buffer, size_t size,
+       const char **exclude)
 {
        struct commit_extra_header *extra = NULL, **tail = &extra, *it = NULL;
        const char *line, *next, *eof, *eob;