Harden matcher repr rendering #370

Job	Run time
Spellcheck with codespell	12s
Check with mypy	12s
Lint with flake8	11s
Run tests on Python 3.11 (ubuntu-latest)	16s
Run tests on Python 3.10 (ubuntu-latest)	17s
Run tests on Python 3.13 (ubuntu-latest)	17s
Run tests on Python 3.8 (ubuntu-latest)	24s
Run tests on Python 3.10 (macos-latest)	38s
Run tests on Python 3.13 (macos-latest)	17s
Run tests on Python 3.12 (macos-latest)	17s
Run tests on Python 3.14 (macos-latest)	17s
Run tests on Python 3.9 (ubuntu-latest)	24s
Run tests on Python 3.8 (macos-latest)	1m 7s
Run tests on Python 3.12 (ubuntu-latest)	20s
Run tests on Python 3.9 (windows-latest)	1m 23s
Run tests on Python 3.13 (windows-latest)	43s
Run tests on Python 3.9 (macos-latest)	40s
Run tests on Python 3.14 (windows-latest)	57s
Run tests on Python 3.11 (macos-latest)	15s
Run tests on Python 3.14 (ubuntu-latest)	19s
Run tests on Python 3.11 (windows-latest)	42s
Run tests on Python 3.10 (windows-latest)	42s
Run tests on Python 3.8 (windows-latest)	1m 14s
Run tests on Python 3.12 (windows-latest)	53s
Deploy to pypi	-1s
	12m 56s

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