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2017 Apr 05
0
Bug report: POSIX regular expression doesn't match for somewhat higher values of upper bound
>>>>> <dietmar.schindler at manroland-web.com>
>>>>> on Tue, 4 Apr 2017 08:45:30 +0000 writes:
> Dear Sirs,
> while
>> regexpr('(.{1,2})\\1', 'foo')
> [1] 2
> attr(,"match.length")
> [1] 2
> attr(,"useBytes")
> [1] TRUE
> yields the correct match, an
2017 Apr 04
2
Bug report: POSIX regular expression doesn't match for somewhat higher values of upper bound
Dear Sirs,
while
> regexpr('(.{1,2})\\1', 'foo')
[1] 2
attr(,"match.length")
[1] 2
attr(,"useBytes")
[1] TRUE
yields the correct match, an incremented upper bound in
> regexpr('(.{1,3})\\1', 'foo')
[1] -1
attr(,"match.length")
[1] -1
attr(,"useBytes")
[1] TRUE
incorrectly yields no match.
R versions tested:
2.11.1