I am using basic GDB CLI tool, no any TUI frontends. It highlights some parts of code with the same color as my terminal background making them indistinguishable. I know it is possible to disable source code highlighting but I would like to have it.
I didn't find much about this in documentation besides the fact that either GNU Source Highlight library, or Python Pygments package provide highlighting, but not a single word about how to check which of them GDB actually use or how to configure them and adjust colors.
How to adjust source code highlighting in GDB cli?
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1 Answers
Edit esc.style in /usr/share/source-highlight/esc.style
GDB uses source-highlight which should not be confused with similar tool called just 'highlight' and provided by some distributions including Debian and Ubuntu. It is possilbe to check if GDB is actually linked with it: there should be --enable-source-highlight line in gdb --configuration output. It is documented in info source-highlight and is configured by .lang and .style files. esc means 'escape' and used for output in terminal, esc.style usage is hardcoded in GDB sources, it would be more correct to check terminfo and use esc256.style if appropriate, but it is written the way it is written.
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