[Octave-bug-tracker] [bug #39645] weird characters inserted when searching in readline

[Mike Miller]

Follow-up Comment #2, bug #39645 (project octave):

I believe this is the relevant readline feature that is triggering this bug:

http://git.savannah.gnu.org/cgit/readline.git/tree/isearch.c#n387

In short, the escape key terminates the interactive search mode. If other
characters are read within a certain timeout, the escape character is sent
again so that they total key combination is preserved. This is not happening
in Octave.

I don't think this is a timeout problem, however. I made a hack to set the
readline input timeout to a full second. Now it simply pauses for a second
before displaying "[D" when I press the left arrow key.

Also if I type fast enough I can get readline to accept sequences beginning
with escape while in the search mode, for example Esc u, but entering the
Alt-u combination fails and just prints "u".

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