Re: gawk bug - 'is equal' is faulty for string

[Manuel Collado]

El 27/01/2020 a las 14:28, Jérôme Jargot escribió:
> Hello,
>
> This is not the last gawk version and I think I must be mistaken because
> the == is very likely not buggy for strings.
> Still I do not understand my mistake, so I submit a bug report.
>
> *TESTS: 'is equal' is faulty for string => 2 lines printed instead of 1*
>
> # printf "'a', '7.1'\n'a', '7.2'\n'a', '7.3'\n'a', '7.10'\n" "" | LC_ALL=C
> gawk --field-separator \' '$4==cversion {print}' cversion=7.10
> 'a', '7.1'
> 'a', '7.10'
>
> # printf "'a', '7.1'\n'a', '7.2'\n'a', '7.3'\n'a', '7.10'\n" "" | LC_ALL=C
> gawk --field-separator \' '$4==cversion {print}' cversion=7.1
> 'a', '7.1'
> 'a', '7.10'

I think this is the expected result in both cases. The "$4==cversion" 
comparison is a numeric one, because both $4 and cversion values come 
from input data and look as numbers.

Please search for "numeric string" or "strnum" in the gawk manual.

Hope this helps.
--
Manuel Collado - http://lml.ls.fi.upm.es/~mcollado