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bug#3746: M-r in comint mode should use isearch

From: Juri Linkov
Subject: bug#3746: M-r in comint mode should use isearch
Date: Sat, 04 Jul 2009 02:36:36 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (x86_64-pc-linux-gnu)

> When using the minibuffer for example doing:
> M-x
> then
> C-r
> will use isearch to search the history.  This is nice because it shows
> the items that are matched.
> M-r should to the same thing when used in comint, right now it's hard
> to tell if it matches anything before typing RET

Do you mean implementing a bash-like history isearch
in comint/shell modes?  I think it would be nice.
But maybe M-r is not the best key to start a shell history
isearch in the comint buffer.  In the minibuffer M-r keeps
its old functionality, and C-s is used to isearch the
minibuffer history.

It seems we can't use C-s in the comint buffer to isearch the
shell history because searching in the output is useful as well.
Maybe we should let C-s to isearch the shell history from the M-r
minibuffer instead of the minibuffer history of the previous M-r input?

Juri Linkov

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