update-index --index-info: allow stage 0 entries.

diff --git a/rev-parse.c b/rev-parse.c
index bb4949ad70364abdf7c3bbca357e5ebc42880614..6bf205a8f53c6af76bb1cc4df7bf37e46d378890 100644 (file)
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -20,6 +20,7 @@ static char *def = NULL;
 #define REVERSED 1
 static int show_type = NORMAL;
 static int symbolic = 0;
+static int abbrev = 0;
 static int output_sq = 0;
 
 static int revs_count = 0;
@@ -52,6 +53,10 @@ static int is_rev_argument(const char *arg)
        };
        const char **p = rev_args;
 
+       /* accept -<digit>, like traditional "head" */
+       if ((*arg == '-') && isdigit(arg[1]))
+               return 1;
+
        for (;;) {
                const char *str = *p++;
                int len;
@@ -95,6 +100,8 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
                putchar('^');
        if (symbolic && name)
                show(name);
+       else if (abbrev)
+               show(find_unique_abbrev(sha1, abbrev));
        else
                show(sha1_to_hex(sha1));
 }
@@ -154,6 +161,7 @@ int main(int argc, char **argv)
        const char *prefix = setup_git_directory();
        
        for (i = 1; i < argc; i++) {
+               struct stat st;
                char *arg = argv[i];
                char *dotdot;
        
@@ -161,6 +169,21 @@ int main(int argc, char **argv)
                        show_file(arg);
                        continue;
                }
+               if (!strcmp(arg,"-n")) {
+                       if (++i >= argc)
+                               die("-n requires an argument");
+                       if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
+                               show(arg);
+                               show(argv[i]);
+                       }
+                       continue;
+               }
+               if (!strncmp(arg,"-n",2)) {
+                       if ((filter & DO_FLAGS) && (filter & DO_REVS))
+                               show(arg);
+                       continue;
+               }
+
                if (*arg == '-') {
                        if (!strcmp(arg, "--")) {
                                as_is = 1;
@@ -195,6 +218,19 @@ int main(int argc, char **argv)
                                verify = 1;
                                continue;
                        }
+                       if (!strcmp(arg, "--short") ||
+                           !strncmp(arg, "--short=", 9)) {
+                               filter &= ~(DO_FLAGS|DO_NOREV);
+                               verify = 1;
+                               abbrev = DEFAULT_ABBREV;
+                               if (arg[8] == '=')
+                                       abbrev = strtoul(arg + 9, NULL, 10);
+                               if (abbrev < MINIMUM_ABBREV)
+                                       abbrev = MINIMUM_ABBREV;
+                               else if (40 <= abbrev)
+                                       abbrev = 40;
+                               continue;
+                       }
                        if (!strcmp(arg, "--sq")) {
                                output_sq = 1;
                                continue;
@@ -216,6 +252,18 @@ int main(int argc, char **argv)
                                        puts(prefix);
                                continue;
                        }
+                       if (!strcmp(arg, "--show-cdup")) {
+                               const char *pfx = prefix;
+                               while (pfx) {
+                                       pfx = strchr(pfx, '/');
+                                       if (pfx) {
+                                               pfx++;
+                                               printf("../");
+                                       }
+                               }
+                               putchar('\n');
+                               continue;
+                       }
                        if (!strcmp(arg, "--git-dir")) {
                                const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
                                static char cwd[PATH_MAX];
@@ -281,6 +329,10 @@ int main(int argc, char **argv)
                }
                if (verify)
                        die("Needed a single revision");
+               if ((filter & DO_REVS) &&
+                   (filter & DO_NONFLAGS) && /* !def && */
+                   lstat(arg, &st) < 0)
+                       die("'%s': %s", arg, strerror(errno));
                as_is = 1;
                show_file(arg);
        }