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a4a801688c
Currently, regex(3) exhibits the following wrong behavior as demonstrated
with sed:
- echo "a{1,2,3}b" | sed -r "s/{/_/" (1)
- echo "a{1,2,3}b" | sed "s/\}/_/" (2)
- echo "a{1,2,3}b" | sed -r "s/{}/_/" (3)
Cases (1) and (3) should throw errors but they actually succeed, and (2)
throws an error when it should match the literal '}'. The correct behavior
was decided by comparing to the behavior with the equivalent BRE (1)(3) or
ERE (2) and consulting POSIX, along with some reasonable evaluation.
Tests were also adjusted/added accordingly.
PR: 166861
Reviewed by: emaste, ngie, pfg
Approved by: emaste (mentor)
MFC after: never
Differential Revision: https://reviews.freebsd.org/D10315
24 lines
389 B
Text
24 lines
389 B
Text
# multiple repetitions
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a** &C BADRPT
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a++ C BADRPT
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a?? C BADRPT
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a*+ C BADRPT
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a*? C BADRPT
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a+* C BADRPT
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a+? C BADRPT
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a?* C BADRPT
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a?+ C BADRPT
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a{1}{1} C BADRPT
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a*{1} C BADRPT
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a+{1} C BADRPT
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a?{1} C BADRPT
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a{1}* C BADRPT
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a{1}+ C BADRPT
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a{1}? C BADRPT
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# Begin FreeBSD
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a*{b} b a{b} a{b}
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a*{b} C BADRPT
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# End FreeBSD
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a\{1\}\{1\} bC BADRPT
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a*\{1\} bC BADRPT
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a\{1\}* bC BADRPT
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