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sort: allow keys where start_col > end_col

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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.
This commit is contained in:
Jakob Kramer 2015-04-05 21:36:04 +02:00 committed by sin
parent 061932a31b
commit 403b047a30
1 changed files with 1 additions and 1 deletions
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sort.c
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@ -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);