Highlight Python execution traces and embedded source lines - #3981
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Matei02355 wants to merge 2 commits into
Open
Highlight Python execution traces and embedded source lines#3981Matei02355 wants to merge 2 commits into
Matei02355 wants to merge 2 commits into
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Matei02355
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September 7, 2026 15:06
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Python's
trace --traceoutput mixes source locations, optional timing, call headers, and executed source lines. Highlighting it as ordinary Python loses those boundaries.Add a small Python Trace utility syntax that delegates source text to the existing Python grammar. It highlights filenames, line numbers, elapsed time, function/class declarations, and call headers. Each traced line resets nested parsing because execution can repeat or jump between functions; ordinary program output stays plain. Supports explicit language selection,
.pytrace, and first-line detection. The existing Python grammar is unchanged.Fixes #1955.
Validation: rebuilt and loaded the syntax cache; golden text and color assertions cover timed/untimed lines, declarations, f-strings, comments, filenames with spaces, pseudo-files and recovery after an unfinished multiline string. Real
python -m trace --traceoutput passed text-preservation and color checks with and without--timing. No Rust code changed.