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To: cygwin AT cygwin DOT com
From: paul <paul DOT domaskis AT gmail DOT com>
Subject: Re: Get old fortran executable to update screen
Date: Wed, 4 Dec 2013 16:25:41 +0000 (UTC)
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Message-ID: <loom.20131204T172159-843@post.gmane.org>
References: <loom DOT 20131203T174612-180 AT post DOT gmane DOT org> <429170159 DOT 20131203224752 AT mtu-net DOT ru>
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Andrey Repin <anrdaemon <at> yandex.ru> writes:
> 
> Greetings, paul!
> 
>> I'm using an executable compiled from a FORTRAN program  When I run
>> it from a DOS command line, I get prompts and progress updates (an
>> iteration count that rewrites the line without scrolling the screen
>> upward).  I get none of this when I invoke the program from a
>> cygwin bash shell.
> 
> I suspect you are saying "bash shell" where it should be "mintty
> terminal", which may be the actual culprit for your issue.  Try
> running bash directly (it should start in standard Windows console)
> and repeat your tests.
> 
>> The output that should have been displayed to the user is in fact
>> captured if I run the unix (cygwin) script command, but no guileful
>> tricks I tried made the prompts and progress updates display in
>> real time.  I tried the script command options -f and -c
>> OldFortramProgram.exe.  I managed to get around the lack of prompts
>> by memorizing the order of the input required of the user, and that
>> allows the program to proceed.  The progress updates would be
>> useful, though (long run times).
> 
> Sorry for my terrible english...

You English seems perfectly comprehensible, Andrey.

Andrey, you're partly right about mintty.  If I use a DOS command line
window and directly invoke bash.exe -i, I get all the prompts and
iteration count updates.  However, the bottleneck then becomes the
script command.  Even with the -f option, it buffers the text being
saved before sending accumulated content to the screen in bursts.  Ah
well.  Thanks.


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