From: Vladimir Zhukov <pironim@...>
Date: 2012-04-14T05:32:06+09:00
Subject: Re: how to avoid escaping special chars after backslah in string

Hm. I know you can escsape some characters with URI::encode URI::decode
this methods for URLs but you can specify additional parameter - regexp 
which select what symbols
you want encode. I'm not write custom regexp for thats.
But maybe this can help.

On 04/13/2012 11:22 PM, Jan E. wrote:
> Well, you cannot change the fact that backslashes are escape characters
> in string literals (unless you modified the Ruby Parser). You either
> have to double them or use the heredoc syntax mentioned by Vladimir.
>
> But does this situation even occur? I mean: In you final program, you
> probably won't type in the strings by hand but rather read them from a
> file or whatever. In this case, there's no problem at all. A backslash
> in a given string is a literal backslash. The escaping only happens with
> string literals written in Ruby.
>
> By the way: Your regex doesn't work anyway, because you're only checking
> for substrings. The "false alarm" has nothing to do with the double
> backslash:
>
> " ****imp" =>  this also matches, because it contains the substring
> "*img".
>
> Also the "|" are wrong in a character class. Why don't you use the regex
> we proposed in your other threads?
>
>
>
>
> Lucky Nl wrote in post #1056386:
>> " \\imp ".match(/
>> [|@|#|$|+|{|}|'|"|?|<|>|*|-|!|%|^|&|:|;|\|=|.|~|`|^|\]|\[|'|\\|\/|\|]imp
>> /)
>>
>> when i am trying to match string around only one special char.it is
>> returning matching bcz the reason escaping slash .
>>
>> " *$imp ".match(/
>> [|@|#|$|+|{|}|'|"|?|<|>|*|-|!|%|^|&|:|;|\|=|.|~|`|^|\]|\[|'|\\|\/|\|]imp
>> /)
>>
>> it will not match .this is returned as i expected
>>
>> In the firstcase also have 2 specialchars i want to expect that should
>> be work as like 2nd one
>> Vladimir wrote in post #1056383:
>>> On 04/13/2012 09:01 PM, Roger Pack wrote:
>>>> so what's your ideal syntax here?
>>>>
>>> if you need a avoid escaping completely you can use
>>>
>>> /heredoc/
>>>
>>> myText =<<DOC
>>> Please Det \ \t \n \r ach and return this coupon with your payment.
>>> Do not send cash or coins.
>>>
>>> Please write your name and account number on the check and
>>> make checks payable to:
>>>
>>>           Acme Corporation
>>>
>>> Thank you for your business.
>>> DOC
>>>
>>> all characters will be saved as you print them without escaping
>