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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: GPS wrong handling of CR / LF in a virtual Windows
Date: Sat, 04 Feb 2012 20:50:15 +0000
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Date: 2012-02-04T20:50:15+00:00
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Achim <joachim.schroeer@web.de> writes:

> I have a very strange problem using the following configuration:
>
> Gnat:	GNAT GPL 2011 / GPS 5.0.1
> OS:	Virtual Windows XP using Virtual-Box on Host Mac-OS 10.6
>
> The GPS editor does not handle CR/LF charaters correctly.
> When the cursor is at the end of the line (behind the last displayed
> character) and enter is pressed, no empty new line appears, but all
> line numbers are incremented by one.
> E.G. when the cursor is on the 5-th line in front of the 6-th line the
> numbers 6 AND 7 are displayed in the same character. After each
> pressing of enter another line-number is displayed in front of the
> next line, all in the same place, but no new empty line is inserted.
>
> I tried all variations in the preferences-editor-Ada dialogs but
> without any success.
>
> I've newer seen such behaviour, not on Mac-OS, Ubuntu or native Windows.
>
> The same thing happens when already existing files are displayed in
> the editor. All existing empty lines are not shown.
>
> The whole thing is a bit disturbing.
> I would appreciate any hint.

This sounds rather like the problem I reported 31 July 2010 [J731-001];
if so, it's to do with font selection.

> On Mac OS X Snow Leopard, GNAT GPL 2010's GPS 4.4.1 doesn't find the
> Lucida fonts; the result is odd-looking, not least because blank lines
> are squashed: see lines 22/23, 25/26, 27/28 etc below.
>
> Monaco is a much better choice (at points 10/9 rather than the default
> 12/10).

On this machine (Lion) I have the fonts set to Inconsolata, but I think
that was a download from <somewhere>. Monaco certainly works for me.

In Edit/Preferences, there are 2 font settings unger General and one
under Editor/Fonts & Colors - the last is the one that controls code
appearance.

HTH