[screen-devel] [bug #50601] Screen rewrites 38; 5; nn escapes even when surrounding terminal supports them

[Peder Stray]

URL:
  <http://savannah.gnu.org/bugs/?50601>

                 Summary: Screen rewrites 38;5;nn escapes even when
surrounding terminal supports them
                 Project: GNU Screen
            Submitted by: pstray
            Submitted on: Tue 21 Mar 2017 01:30:39 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.5.0
           Fixed Release: None
         Planned Release: None
           Work Required: None

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Details:

Even though the surrounding terminal supports 256-colors and thus 38;5;nn
escapes, screen seem to rewrite those sequences for at least colors 0 through
7 to 30+nn instead.  This causes color errors when combing whith bold (1) as
30+nn together with bold usually maps to colors nn+8, and thus any of the
first 8 colors is then displayed as bright intensity in addition to bold.

See the two supplied images, the first showing how gnome-terminal displays the
colors (and how they should be), the second how the same output in screen
causes translation of escape codes an thus the display of wrong colors.

The same happens with xterm as the surrounding terminal.



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File Attachments:


-------------------------------------------------------
Date: Tue 21 Mar 2017 01:30:39 PM UTC  Name: terminal-noerror.png  Size: 27kB 
 By: pstray

<http://savannah.gnu.org/bugs/download.php?file_id=40045>
-------------------------------------------------------
Date: Tue 21 Mar 2017 01:30:39 PM UTC  Name: screen-error.png  Size: 27kB  
By: pstray

<http://savannah.gnu.org/bugs/download.php?file_id=40046>

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