About regexp

About regexp

[xfq]

I have a questions about regexp.

The default value of the variable `sentence-end-base' is:
[.?!][]\"'”)}]*
There is a backslash in the second part of the regexp, why?

RE: About regexp

[Drew Adams]

> The default value of the variable `sentence-end-base' is:
> [.?!][]\"'")}]*
> There is a backslash in the second part of the regexp, why?

C-h v sentence-end-base tells you:

 sentence-end-base is a variable defined in `paragraphs.el'.
 Its value is "[.?!][]\"'")}]*" 

IOW, the value is a string.  The double-quote chars shown surrounding the string
are not characters in the string.  The double-quote char shown just before the
single-quote char, ', is in the string.  When printed, that char is escaped with
a backslash.  The char in the string following the ' char is a different char (a
curly quote) - it is not used to indicate the string limits, so it need not be
escaped to distinguish it.

Re: About regexp

[xfq]

On 11/25/2012 11:41 PM, Drew Adams wrote:
>> The default value of the variable `sentence-end-base' is:
>> [.?!][]\"'")}]*
>> There is a backslash in the second part of the regexp, why?
>
> C-h v sentence-end-base tells you:
>
>   sentence-end-base is a variable defined in `paragraphs.el'.
>   Its value is "[.?!][]\"'")}]*"
>
> IOW, the value is a string.  The double-quote chars shown surrounding the string
> are not characters in the string.  The double-quote char shown just before the
> single-quote char, ', is in the string.  When printed, that char is escaped with
> a backslash.  The char in the string following the ' char is a different char (a
> curly quote) - it is not used to indicate the string limits, so it need not be
> escaped to distinguish it.
>
Thx.  BTW, I like your bookark+/ediff+/Icicles/lacarte very much.