tests: add test for issue 5494 but with --collapse
This was not fixed, so the test case currently demonstrates the
breakage.
Differential Revision: https://phab.mercurial-scm.org/D2714
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true