Re: [fpc-pascal] ReadLine history works in windows/cmd.exe but not in bash/linux

2010-09-01 Thread David W Noon
On Wed, 1 Sep 2010 19:30:07 +0200, Dusan Halicky wrote about
[fpc-pascal] ReadLine history works in windows/cmd.exe but not in
bash/linux:

 I compiled it in windows (FPC 2.4.0), run it in cmd.exe and I was
 surprised that history of commands is working out of the box (by
 pressing arrow UP).

That is standard behaviour for most modern shells.

 Can you help me to make readln history working on linux too?

The readln() function has nothing to do with libreadline.

The problem you are seeing is due to the shell you are using and the
key binding options you have assigned or defaulted to in the shell
and/or the terminal emulator. It has nothing to do with FPC.

Try:

man 1 bash

and see how you can set the options you need.
-- 
Regards,

Dave  [RLU #314465]
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david.w.n...@ntlworld.com (David W Noon)
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Re: [fpc-pascal] ReadLine history works in windows/cmd.exe but not in bash/linux

2010-09-01 Thread Dusan Halicky
 I compiled it in windows (FPC 2.4.0), run it in cmd.exe and I was
 surprised that history of commands is working out of the box (by
 pressing arrow UP).

 That is standard behaviour for most modern shells.
 The readln() function has nothing to do with libreadline.

 The problem you are seeing is due to the shell you are using and the
 key binding options you have assigned or defaulted to in the shell
 and/or the terminal emulator. It has nothing to do with FPC.

So you are saying, that cmd.exe is monitoring what am I typing, and
when test.exe is waiting on `readln(s)` and I press UP, then cmd.exe
somehow paste to STDIN what I typed 1 EOL before?

 Try:

 man 1 bash

 and see how you can set the options you need.

Can you be more specific?
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Re: [fpc-pascal] ReadLine history works in windows/cmd.exe but not in bash/linux

2010-09-01 Thread Michael Van Canneyt



On Wed, 1 Sep 2010, Dusan Halicky wrote:


I compiled it in windows (FPC 2.4.0), run it in cmd.exe and I was
surprised that history of commands is working out of the box (by
pressing arrow UP).


That is standard behaviour for most modern shells.
The readln() function has nothing to do with libreadline.

The problem you are seeing is due to the shell you are using and the
key binding options you have assigned or defaulted to in the shell
and/or the terminal emulator. It has nothing to do with FPC.


So you are saying, that cmd.exe is monitoring what am I typing, and
when test.exe is waiting on `readln(s)` and I press UP, then cmd.exe
somehow paste to STDIN what I typed 1 EOL before?


Yes, that is correct.

If you run the program twice, you'll see that you can scroll back even 
to what you typed in the first run of the program; This is clear proof 
that it is not the program itself which does that.


Michael.
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Re: [fpc-pascal] ReadLine history works in windows/cmd.exe but not in bash/linux

2010-09-01 Thread Dusan Halicky
 If you run the program twice, you'll see that you can scroll back even to
 what you typed in the first run of the program; This is clear proof that it
 is not the program itself which does that.

Ok. This somehow convinced me. Can I achieve the same thing in bash?
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Re: [fpc-pascal] ReadLine history works in windows/cmd.exe but not in bash/linux

2010-09-01 Thread Michael Van Canneyt



On Wed, 1 Sep 2010, Dusan Halicky wrote:


If you run the program twice, you'll see that you can scroll back even to
what you typed in the first run of the program; This is clear proof that it
is not the program itself which does that.


Ok. This somehow convinced me. Can I achieve the same thing in bash?


Not that I know of. But I'm not a bash expert; I use tcsh.

Michael
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Re: [fpc-pascal] ReadLine history works in windows/cmd.exe but not in bash/linux

2010-09-01 Thread David W Noon
On Wed, 1 Sep 2010 21:17:04 +0200, Dusan Halicky wrote about Re:
[fpc-pascal] ReadLine history works in windows/cmd.exe but not in
bash/linux:

  If you run the program twice, you'll see that you can scroll back
  even to what you typed in the first run of the program; This is
  clear proof that it is not the program itself which does that.
 
 Ok. This somehow convinced me. Can I achieve the same thing in bash?

Not bash itself, but you can call readline() explicitly and achieve the
desired effect.

Remember that the program and the shell are largely independent under
all UNIX systems, including Linux.  So, if you want the scrollback
capabilities you need to use the appropriate API.
-- 
Regards,

Dave  [RLU #314465]
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
david.w.n...@ntlworld.com (David W Noon)
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