tests: show bug in update introduced in 87a34c767384
As reported by Martin at https://phab.mercurial-scm.org/D6475.
Differential Revision: https://phab.mercurial-scm.org/D6580
# 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
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false