Make ordinary isearch obey search-whitespace-regexp too.

* lisp/isearch.el (search-whitespace-regexp): Make string and nil
values apply to both ordinary and regexp search.  Allow a cons
cell value to distinguish between the two.
(isearch-whitespace-regexp, isearch-search-forward)
(isearch-search-backward): New functions.
(isearch-occur, isearch-search-fun-default, isearch-search)
(isearch-lazy-highlight-new-loop): Use them.
(isearch-forward, isearch-forward-regexp): Doc fix.

1 files changed, 7 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 0c9ffe50093..02bd6410255 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -179,6 +179,13 @@ end of the buffer.  It defaults to t.
 and `M-s _' in Isearch toggles symbol search mode.
 `M-s c' in Isearch toggles search case-sensitivity.
 
+*** `search-whitespace-regexp' now acts on ordinary incremental search
+as well, so that each sequence of spaces in the search string matches
+any combination of one or more whitespace characters.  To change this
+behavior, you can give `search-whitespace-regexp' a cons cell value,
+where the car and cdr specify values for ordinary and regular
+expression incremental search respectively.
+
 ** M-x move-to-column, if called interactively with no prefix arg, now
 prompts for a column number.