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From: gentoo_eshoes@tutanota.com
Newsgroups: gnu.bash.bug
Subject: Re: pasting in bracketed-paste mode breaks reverse-i-search
Date: Tue, 21 Apr 2020 22:25:57 +0200 (CEST)
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Apr 21, 2020, 16:14 by chet.ramey@case.edu:

> On 4/20/20 9:32 PM, gentoo_eshoes--- via Bug reports for the GNU Bourne
> Again SHell wrote:
>
>> pasting while in reverse-i-search undoes it
>> Repeat-By:
>> $ bind 'set enable-bracketed-paste on'
>> select character 'c' with the mouse, so it can be pasted via pressing MM=
B or shift+insert
>> press Ctrl+R to enter (reverse-i-search)`':=20
>> paste, (either by pressing MMB or shift+insert)
>> the reverse-i-search prompt goes away and you're back to regular prompt,=
 having just 'c' pasted there: $ c
>>
>
> It's the ESC prefix. You can use it if you remove ESC from the list of
> characters that terminate an incremental search. The problem is that most
> of the key sequences that begin with ESC (e.g., arrow keys) are intended =
to
> terminate the isearch and use the ESC as the first character of a key
> sequence. You have to look farther ahead in the input stream than
> incremental search presently does to differentiate between an ESC-prefixe=
d
> key sequence you want to use for searching and one you want to terminate
> the search and use as a command.
>
Did you mean to say that bracketed-mode pastes ESC, perhaps as a way to hig=
hlight(ie. that white background) ?
interesting

=C2=A0 static char * const default_isearch_terminators =3D "\033\012";=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20
ESC and newline(ie. \n) hmm...

oh hey, I found out how I know that Ctrl+R is the key that invokes reverse-=
i-search:
$ bind -q reverse-search-history
reverse-search-history can be invoked via "\C-r".

ok, so to translate what you said... the default is this:
$ bind "set isearch-terminators '\033\012'"
even though `bind -v | grep isearch-terminators` shows nothing before I run=
 that command because it's not set.

So if I run this:
$ bind "set isearch-terminators '\012'"
then the issue is gone and reverse-i-search works, with the caveat that=C2=
=A0it breaks when you try to rpess left/right arrows by it typing in "[D" r=
espectively "[C" , but it doesn't happen the first time right after paste, =
only if I just do Ctrl+R type some string, press arrow...
I see that left/right arrow keys yield ESC[D and ESC[C respectively. So it =
eats the ESC, it still terminates the i-search, then continues to type what=
's left: "[D" or "[C". Confused as to why. I thought ESC shouldn't terminat=
e i-search anymore, given that I've set it to just newline(\012 aka \x0a). =
At this point I'm questioning my sanity, my (mis)understanding of things th=
us far.

I'm still not sure where the ESC that breaks it comes from, is it from the =
highlight?
like something similar to $ echo -e '\033[47mPASTED' to get white-ish backg=
round?

I'm confused whether or not this is fixable by bash, or should I have to us=
e that \012 terminator workaround? Please advise :) Thx.