rev-list: allow -n<n> as shorthand for --max-count=<n>

Both -n<n> and -n <n> are supported.  POSIX versions of head(1) and
tail(1) allow their line limits to be parsed this way.  I find
--max-count to be a commonly used option, and also similar in spirit to
head/tail, so I decided to make life easier on my worn out (and lazy :)
fingers with this patch.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/rev-list.c b/rev-list.c
index 0b142c1..4565755 100644 (file)
--- a/rev-list.c
+++ b/rev-list.c
@@ -749,6 +749,16 @@ int main(int argc, const char **argv)
                struct commit *commit;
                unsigned char sha1[20];
 
+               if (!strcmp(arg, "-n")) {
+                       if (++i >= argc)
+                               die("-n requires an argument");
+                       max_count = atoi(argv[i]);
+                       continue;
+               }
+               if (!strncmp(arg,"-n",2)) {
+                       max_count = atoi(arg + 2);
+                       continue;
+               }
                if (!strncmp(arg, "--max-count=", 12)) {
                        max_count = atoi(arg + 12);
                        continue;

diff --git a/rev-parse.c b/rev-parse.c
index d2f0864..3c99a79 100644 (file)
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -165,6 +165,21 @@ 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;