[bug-gawk] gawk regex ignores case incorrectly for character range

[Sena, Frederick]

Hi,

 

Just wanted  to report a gawk bug in the regex matching for a character range.  I found a specific instance where gawk ignores case when it should not.

 

$ awk --version

GNU Awk 3.1.5

 

$ env | grep LANG

LANG=en_US.utf8

 

 

Examples

 

1) Example bug for a regex if it includes a character range it incorrectly ignores case.  The output below should not appear because the range does not match case.

 

$ echo hi | awk '/^[A-H]/'

hi

 

 

2) Examples for regex without range.  Notice these correctly match case and nothing is printed.

$ echo hi  | awk '/^H/'

 

$ echo hi | awk '/^[H]/'

 

 

Thanks very much,

--Fred

 

 

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