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Postings from July 2008
Citeren Yitzchak Scott-Thoennes <sthoenna@efn.org>:
> On Mon, June 2, 2008 1:52 pm, Bram wrote:
>> Quoting David Nicol <davidnicol@gmail.com>:
>>> Warn that non-final $ will interpolate in documentation and suggest
>>> \Z instead?
>>
>> Given how easy it is to miss it I feel more for a
>> 'Possible unintended interpolation of $\ in regex' warning. (if that
>> is even possible of course)
>>
>> Any comments on the warning?
>
> Sounds great, if you can make it suppressable with ${\}.
>
Patch attached.
./perl -wle '"" =~ m/$\s/;'
Possible unintended interpolation of $\ in regex at -e line 1.
./perl -Ilib -Mdiagnostics -wle '"" =~ m/$\s/;'
Possible unintended interpolation of $\ in regex at -e line 1 (#1)
(W ambiguous) You said something like m/$\/ in a regex.
The regex m/foo$\s+bar/m translates to: match the word 'foo', the output
record separartor (see perlvar/$\) and the letter 's' (one time or more)
followed by the word 'bar'.
If this is what you intended then you can silence the warning by using
m/${\}/ (for example: m/foo${\}s+bar/).
If instead you intended to match the word 'foo' at the end of the line
followed by whitespace and the word 'bar' on the next line then
you can use
m/$(?)\/ (for example: m/foo$(?)\s+bar/).
./perl -wle '"" =~ m/${\}s/;'
./perl -Ilib -Mdiagnostics -wle '"" =~ m/${\}s/;'
Not sure tho if the text in perldiag is clear enough...
Kind regards,
Bram
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