bug#13223: patch to fix this bug

[Tim Daly Jr.]

This patch keeps emacs from printing the history messages when performing a 
history search in a comint buffer.  (For example, M-x shell RET M-r o).

Changelog:

2013-04-28  Tim Daly Jr.  <tim@tenkan.org>

        * comint.el (comint-history-isearch-in-progress): new variable
        that lets us detect that an isearch is running over command
        history
        (comint-previous-matching-input): don't print "History item: N"
        messages when called as part of an isearch over history, because
        it's too slow and spammy.
        (comint-history-isearch-setup, comint-history-isearch-end): toggle
        comint-history-isearch-in-progress to indicate search start and
        stop

Patch:

skip-isearch-history-msgs.patch
Description: Binary data