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Handling assume_default_colors

From: Bryan Christ
Subject: Handling assume_default_colors
Date: Mon, 30 Sep 2019 11:12:24 -0500


In about 90% or more of all scenarios, pair zero is most likely color white foreground on color black background.  However, assume_default_colors() allows this "rule" to be broken.  As far as I can tell, there is no way for my terminal emulator to know about this change.  

When an application uses init_color() and the underlying term is an xterm variant, ncurses emits a OSC sequence that tells me about this custom color (via XParseColor).  Would it be possible to have ncurses emit a different OSC to indicate when assume_default_colors() is used and what pair zero colors are (in XParseColor RGB values)? 


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