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Re: A few questions about occur-mode

From: Juanma Barranquero
Subject: Re: A few questions about occur-mode
Date: Mon, 23 Sep 2002 13:04:54 +0200

On Mon, 23 Sep 2002 00:45:01 +0100, John Paul Wallington <address@hidden> wrote:

> `occur-next' and `occur-prev' work in the EMACS_21_1_RC branch.

You're right. Somewhere in the big revamp of occur this functionality
was lost somehow.

> In HEAD they could be changed to use `occur-match' property instead of
> `occur-point', or `occur-engine' could add `occur-point' properties to
> its output.  Which is better ?

Using occur-match seems more economical, but then `occur-next' and
`occur-prev' should have to be modified. The occur-point property was
set in just one character at the end of the match; with occur-match, the
entire match is propertized and occur-{next|prev} would first jump to
the start of the match, then to the end. Not that is difficult, of
course. sh-script.el should have to be modified too.

OTOH, adding back occur-point is a one- or two- line change:

Index: replace.el
RCS file: /cvs/emacs/lisp/replace.el,v
retrieving revision 1.159
diff -u -2 -r1.159 replace.el
--- replace.el  18 Sep 2002 16:03:58 -0000      1.159
+++ replace.el  23 Sep 2002 11:03:55 -0000
@@ -822,5 +822,6 @@
                                                `(font-lock-face ,match-face)))
-                       (setq start (match-end 0))))
+                        (setq start (match-end 0))
+                        (put-text-property start (1+ start) 'occur-point t 
                    ;; Generate the string to insert for this match
                    (let* ((out-line


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