Re: Interpretation of a space in regexp isearch?

[Chong Yidong]

Juri Linkov <address@hidden> writes:

> It would be better to reimplement it in isearch exactly the same way
> as `isearch-word' is implemented because these two are similar
> features.
>
> A new `isearch-whitespace' toggled by `M-s SPC' could construct a regexp
> like in `word-search-regexp' and search it with `re-search-forward' in
> `isearch-search-fun-default'.  This will provide flexibility to solve
> related problems.

I think this is a good idea.

I'd like the whitespace munging to be enabled for C-s, unless the user
disables it by customizing `search-whitespace-regexp' (or whatever
variable we decide on).  So `isearch-forward' itself should pass the
relevant flag to `isearch-mode'.

Instead of adding an `isearch-whitespace' flag, I think this is best
implemented as a third possible value for `isearch-word', say the symbol
`match-any-whitespace'.