Re: regex edit mode

[Igor Sosa Mayor]

Sam Halliday <sam.halliday@gmail.com> writes:

> Hi all,
>
> It is sometimes confusing, when writing a regex in elisp, to remember all the 
> escaping rules that are in play.
>
> Does anybody on this list know of a minor mode that would allow the
> user to edit regexes so that escaping is not necessary, but for the
> escaping to occur "under the hood".
>
> Imagine being able to place the point over a string containing a regex
> (which is using escapes) and then call an interactive function which
> makes the escape characters go away and if special characters are
> entered, the escapes are added automagically. When exiting the minor
> mode, the raw string with escapes would appear again.
>
> It would be equally fantastic to be able to do this for other languages that 
> have their own escaping rules: java/scala come to mind.
>
> Just a thought. It would really brighten up my day if it were possible.

not exactly what you are looking for, but... do you know this function?

,----[ C-h f regexp-builder RET ]
| regexp-builder is an alias for `re-builder' in `re-builder.el'.
| 
| (regexp-builder)
| 
| Construct a regexp interactively.
| This command makes the current buffer the "target" buffer of
| the regexp builder.  It displays a buffer named "*RE-Builder*"
| in another window, initially containing an empty regexp.
| 
| As you edit the regexp in the "*RE-Builder*" buffer, the
| matching parts of the target buffer will be highlighted.
| 
| [back]
`----


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