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51278: make (i) subscript flag for zero-length string consistent

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This commit is contained in:
Peter Stephenson 2023-01-16 11:10:02 +00:00
parent 857bc4343b
commit 03292bceec
3 changed files with 16 additions and 1 deletions

6
ChangeLog
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@ -1,3 +1,9 @@
2023-01-16 Peter Stephenson <p.stephenson@samsung.com>
* 51278: Src/params.c, Test/D06subscript.ztst: result of (i)
subscript flag with zero-length string was inconsistent with
other cases.
2023-01-11 Oliver Kiddle <opk@zsh.org> 2023-01-11 Oliver Kiddle <opk@zsh.org>
* 51297: Test/X04zlehighlight.ztst: update expected test results * 51297: Test/X04zlehighlight.ztst: update expected test results

2
Src/params.c
View file

@ -1669,7 +1669,7 @@ getarg(char **str, int *inv, Value v, int a2, zlong *w,
/* Searching characters */ /* Searching characters */
int slen; int slen;
d = getstrvalue(v); d = getstrvalue(v);
if (!d || !*d) if (!d)
return 0; return 0;
/* /*
* beg and len are character counts, not raw offsets. * beg and len are character counts, not raw offsets.

9
Test/D06subscript.ztst
View file

@ -299,3 +299,12 @@ F:In math, (($i)) should be the same as ((i)), see workers/47748.
echo ${string[(pws:\0:)1]} echo ${string[(pws:\0:)1]}
0:Word splitting by NUL 0:Word splitting by NUL
>foo >foo
string="a"
print ${string[(i)x]}
string=""
print ${string[(i)x]}
0:Can check off end of zero length string
F:Regression test for inconsistency of failed (i) on zero-length string
>2
>1