[PATCH] git-rev-list: tolerate multiple --stdin options

[Adam Brewster <adambrewster@gmail.com>]

There's no reason to fail if the user asks for --stdin twice.  Of course
there's only one stdin, and it can only be read once, and there's no
reason to ask for it twice, but --all --all doesn't make sense, and
that's accepted, so accept this too.

Also, with read_revisions_from_stdin in revision.c where it might be
called by other programs, it's better to check that stdin isn't at eof
before trying to read it.

Signed-off-by: Adam Brewster <asb@bu.edu>
---
 builtin-rev-list.c |    3 ---
 revision.c         |    2 +-
 2 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/builtin-rev-list.c b/builtin-rev-list.c
index b4a2c44..7f7c1a7 100644
--- a/builtin-rev-list.c
+++ b/builtin-rev-list.c
@@ -579,7 +579,6 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 {
 	struct commit_list *list;
 	int i;
-	int read_from_stdin = 0;
 	int bisect_show_vars = 0;
 	int bisect_find_all = 0;
 	int quiet = 0;
@@ -616,8 +615,6 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 			continue;
 		}
 		if (!strcmp(arg, "--stdin")) {
-			if (read_from_stdin++)
-				die("--stdin given twice?");
 			read_revisions_from_stdin(&revs);
 			continue;
 		}
diff --git a/revision.c b/revision.c
index 0191160..c1550c4 100644
--- a/revision.c
+++ b/revision.c
@@ -914,7 +914,7 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
 void read_revisions_from_stdin(struct rev_info *revs)
 {
 	char line[1000];
-
+	if (feof(stdin)) return;
 	while (fgets(line, sizeof(line), stdin) != NULL) {
 		int len = strlen(line);
 		if (len && line[len - 1] == '\n')
-- 
1.5.5.1.211.g65ea3.dirty