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29 Repl syntax highlighting fails in pattern matching when the previous case spans across multiple lines · Issue #136801 · python/cpython · GitHub
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Repl syntax highlighting fails in pattern matching when the previous case spans across multiple lines #136801

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Repl syntax highlighting fails in pattern matching when the previous case spans across multiple lines#136801
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stdlibStandard Library Python modules in the Lib/ directorytopic-replRelated to the interactive shelltype-bugAn unexpected behavior, bug, or error
@olgarithms

Description

@olgarithms
olgarithms
opened on Jul 19, 2025

Bug report

Bug description:

There is a bug in the new repl syntax highlighting when using pattern matching with cases spawning across new lines.

To reproduce:

def status(code):
    match code:
        case 0: return "OK"  # correct highlight
        case -1:                      # correct highlight
            return "Error"
        case -2:                     # no highlight
            return "Big Error"
        case _:                       # no highlight
            return "Unknown status"

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

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    stdlibStandard Library Python modules in the Lib/ directorytopic-replRelated to the interactive shelltype-bugAn unexpected behavior, bug, or error

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