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bug#21147: readline history is stifled early so (readline-set! history-l

From: Daniel Llorens
Subject: bug#21147: readline history is stifled early so (readline-set! history-length nn) has no effect
Date: Tue, 28 Jul 2015 10:06:06 +0200

The default history-length is 200. When one imports (ice-9 readline), history 
is stifled to this value, so it doesn't matter if you set history-length to a 
larger value later on. I'm surprised that this has gone unnoticed up to now, 
since 200 is really small. I may be missing something...

The patch changes scm_readline_options() so that history is only stiffled when 
the options are actually set. This is rather clumsy since it means that if one 
doesn't set the options, history will never be stifled.

An alternative would be to add an optional readline-options argument to 
activate-readline. That way one would be able to increase history-length before 
the first time history is stifled, and otherwise things would work as they do 


Attachment: 0001-Avoid-stifling-readline-history-when-looking-up-opti.patch
Description: Binary data

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