Adoption of perl/javascript-style regexp syntax

mats cronqvist <>
Wed Jun 3 08:50:17 CEST 2009


"Richard O'Keefe" <> writes:

> On 2 Jun 2009, at 7:59 pm, mats cronqvist wrote:
>
>> Geoffrey Biggs <> writes:
>>
>>> Python provides a method of specifying strings they call "raw
>>> strings," which I find quite interesting. Basically, you prefix your
>>> string with r or R, and any backslashes are treated as literal
>>> characters rather than escape sequences. For example:
>>>
>>>>>> '\b'
>>> '\x08'
>>>>>> r'\b'
>>> '\\b'
>>>
>>> More info in the docs:
>>> http://docs.python.org/3.0/reference/lexical_analysis.html#string-and-bytes-literals
>>>
>>> I'm not sure how well it would work in Erlang, but it's certainly
>>> useful in Python for avoiding the headache-inducing backslash
>>> acrobatics necessary when writing the occasional complex regular
>>> expression.
>>
>>  +1
>
> -1
>
> This is simply the wrong way to deal with complex regular expressions.

  this discussion is about how to represent strings with many escapes,
  not about regexps per se.

  mats


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