[PATCH 4/4] sort: allow keys where start_col > end_col

From: Jakob Kramer <jakob.kramer_AT_gmx.de>
Date: Sun, 5 Apr 2015 21:36:04 +0200

Useful in (rare) cases like:

        $ printf 'aaaa c\nx a\n0 b\n' | sort -k 2,1.3

And this is how POSIX wants it.

---
 sort.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sort.c b/sort.c
index 3697b42..901189e 100644
--- a/sort.c
+++ b/sort.c
_AT_@ -157,7 +157,7 @@ parse_keydef(struct keydef *kd, char *s, int flags)
 		return -1;
 	if (*rest == ',') {
 		kd->end_column = strtol(rest+1, &rest, 10);
-		if (kd->end_column && kd->end_column < kd->start_column)
+		if (kd->end_column < 1)
 			return -1;
 		if (*rest == '.') {
 			kd->end_char = strtol(rest+1, &rest, 10);
-- 
1.9.1
--------------040704000603020308090309--

Received on Mon Sep 17 2001 - 00:00:00 CEST