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tests: actually restore the original environment before running syshg...
tests: actually restore the original environment before running syshg Since os.environ may be overridden in run-tests.py, several important variables such as PATH weren't restored. I don't like the idea of using the system hg *by default* because the executable and the configs are out of our control. But I don't mind as long as the tests pass.

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test-check-shbang.t
25 lines | 786 B | text/troff | Tads3Lexer
#require test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "`dirname "$TESTDIR"`"
look for python scripts that do not use /usr/bin/env
$ syshg files 'set:grep(r"^#!.*?python") and not grep(r"^#!/usr/bi{1}n/env python") - **/*.t'
[1]
In tests, enforce $PYTHON and *not* /usr/bin/env python or similar:
$ syshg files 'set:grep(r"#!.*?python") and **/*.t' \
> -X tests/test-check-execute.t \
> -X tests/test-check-module-imports.t \
> -X tests/test-check-pyflakes.t \
> -X tests/test-check-shbang.t
[1]
The above exclusions are because they're looking for files that
contain Python but don't end in .py - please avoid adding more.
look for shell scripts that do not use /bin/sh
$ syshg files 'set:grep(r"^#!.*/bi{1}n/sh") and not grep(r"^#!/bi{1}n/sh")'
[1]