Re: [OT - Separator character]: Best Practice: Order of regex modifiers?

I've often thought that a separator character would be useful in regex modifier strings to improve readability. Literal numbers have the _ (underscore) for this reason, and I don't see why this separator cannot be "overloaded" for use in regexes.

E.g., rather than
m{ ... }xmsgco
or
s{ ... }{...}xmsgeepo
one might write
m{ ... }xms_gc_o
or
s{ ... }{...}xms_geep_o
(just to fabricate some extreme cases). Of course, my own personal practice is always to use an /xms modifier tail, so a separator would always fall after this mandatory group if there were additional modifiers.

Give a man a fish: <%-{-{-{-<

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Re^2: [OT - Separator character]: Best Practice: Order of regex modifiers? by LanX (Saint) on Feb 01, 2017 at 18:29 UTC
Agreed! or a grouping syntax `s{ ... }{...}{xms geep o}` Anyway I think you could already use the `x` as such if you are careful about whitespaces. Like `s{ ... }{...}msxgeepxo` OTOH it doesn't look much better! BTW: the use of `o` seems to be discouraged. http://stackoverflow.com/questions/550258/does-the-o-modifier-for-perl-regular-expressions-still-provide-any-benefit Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply] [d/l] [select]
Re^3: [OT - Separator character]: Best Practice: Order of regex modifiers? by AnomalousMonk (Archbishop) on Feb 01, 2017 at 19:08 UTC
... the use of o seems to be discouraged. I only latched onto `/o` because I was casting about for something to use in a manufactured example. AFAIU, the `/o` modifier is only useful now in those very limited cases in which one wishes to prevent recompilation of a `qr// m// s///` even when interpolated `Regexp` objects or strings have changed. My understanding is that these operators will not now recompile on each execution unless an interpolated regex/string has changed. Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]
Re^4: Separator character: Best Practice: Order of regex modifiers? by Anonymous Monk on Feb 02, 2017 at 02:45 UTC
AFAIU, the /o modifier is only useful now Hi, check the link, /o has been useless since about 5.6, the docs really ought to read o - pretend to optimize your code, but actually introduce bugs and perl ought to reject /o outright :) Also, there is no way this thread is off topic, thats some serious lack of caffeine	[reply]