Re: History for query replace pairs

[Ted Zlatanov <tzz@lifelogs.com>]

On Tue, 04 Nov 2014 01:46:47 +0200 Juri Linkov <juri@jurta.org> wrote: 

>> This feature seems stalled, is this issue the only thing blocking it?
JL> The only blocking thing is to decide whether to move through the history
JL> of replacements using M-p or M-n.  This patch implements a sequence of M-n
JL> to insert replacement pairs, but it's easy to change just one line from

JL> (read-from-minibuffer
JL>  prompt nil nil nil query-replace-from-history-variable defaults t)))))

JL> to

JL> (read-from-minibuffer
JL>  prompt nil nil nil 'defaults nil t)

JL> then M-p will move through replacement pairs instead of previous
JL> single history strings `from' or `to'.

I'd rather use M-p as the default because the new behavior is IMO much
better.  But it's really no big deal, we can switch it later.

JL> Maybe this choice should be customizable?

OK with me, and probably most Emacs-like :)

JL> The patch uses "\0" as a separator that is highly unlikely to occur in
JL> the replacement strings.

Ah, much better than my suggestion.

JL> Also for better displaying of special characters in the minibuffer,
JL> the following patch modifies isearch-text-char-description used by
JL> query-replace-descr to put a formatted display property on special characters
JL> instead of changing them.  This patch also works better for isearch,
JL> because it keep the faces on the special characters in the failed string.

Nice, I like it.

Ted