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Re: [Bug-apl] Request to implement ^S and ^Q


From: Juergen Sauermann
Subject: Re: [Bug-apl] Request to implement ^S and ^Q
Date: Tue, 6 Dec 2016 15:22:23 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

Hi Xtian,

thanks, fixed in SVN 816.

GNU APL now preserves the ixon bit in the terminal settings at startup rather
than clearing it.

You may or may not have to do something like

stty ixon

before starting apl.

/// Jürgen


On 12/06/2016 03:11 AM, Christian Robert wrote:
Request to implement ^S and ^Q in the interactive session.

In a Linux terminal, when something is scrolling too fast you can always press Control-S (meaning stop) to freeze the display
so you can see what happening, and scroll up/down, then you press Control-Q (meaning continue) and it will resume.

Those 2 signals are actually ignored by the actual interactive apl interface. (to be proven, not sure at 100%)

My guest is that if they were not ignored, the default will actually do the job (suspend and resume) without any programming changes.


I may be wrong.

Xtian.

you can test it on Linux by issuing "cat `a *very large file*`" and typing Control-S (to stop) .... then Control-D (to resume) displaying.




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