[PATCHv8 4/5] pathspec: move prefix check out of the inner loop

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The prefix check is not related the check of pathspec magic; also there
is no code that is relevant after we'd break the loop on a match for
"prefix:". So move the check before the loop and shortcircuit the outer
loop.

Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
 pathspec.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/pathspec.c b/pathspec.c
index eba37c2..4dff252 100644
--- a/pathspec.c
+++ b/pathspec.c
@@ -107,21 +107,22 @@ static void eat_long_magic(struct pathspec_item *item, const char *elt,
 			nextat = copyfrom + len;
 		if (!len)
 			continue;
+
+		if (starts_with(copyfrom, "prefix:")) {
+			char *endptr;
+			*pathspec_prefix = strtol(copyfrom + 7,
+						  &endptr, 10);
+			if (endptr - copyfrom != len)
+				die(_("invalid parameter for pathspec magic 'prefix'"));
+			continue;
+		}
+
 		for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 			if (strlen(pathspec_magic[i].name) == len &&
 			    !strncmp(pathspec_magic[i].name, copyfrom, len)) {
 				*magic |= pathspec_magic[i].bit;
 				break;
 			}
-			if (starts_with(copyfrom, "prefix:")) {
-				char *endptr;
-				*pathspec_prefix = strtol(copyfrom + 7,
-							  &endptr, 10);
-				if (endptr - copyfrom != len)
-					die(_("invalid parameter for pathspec magic 'prefix'"));
-				/* "i" would be wrong, but it does not matter */
-				break;
-			}
 		}
 		if (ARRAY_SIZE(pathspec_magic) <= i)
 			die(_("Invalid pathspec magic '%.*s' in '%s'"),
-- 
2.8.2.123.g3bde101

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