> I like the idea of using a space to match any whitespace in plain
> non-regexp isearch. However, it should be nil by default to preserve
> the default behavior for users who don't expect such a change.
That is fine.
> Also there should be an easy way to put a literal space into the
> search string. In regexp isearch this can be done with C-q SPC.
It is actually easy to extend this to string search, by making an
additional small tweak to isearch-quote-char:
*** 1768,1774 ****
;; Assume character codes 0200 - 0377 stand for characters in some
;; single-byte character set, and convert them to Emacs
;; characters.
! (if (and isearch-regexp (= char ?\ ))
(if (subregexp-context-p isearch-string (length isearch-string))
(isearch-process-search-string "[ ]" " ")
(isearch-process-search-char char))
--- 1777,1783 ----
;; Assume character codes 0200 - 0377 stand for characters in some
;; single-byte character set, and convert them to Emacs
;; characters.
! (if (and (not isearch-word) (= char ?\ ))
(if (subregexp-context-p isearch-string (length isearch-string))
(isearch-process-search-string "[ ]" " ")
(isearch-process-search-char char))
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