filemerge: fix regular expression pattern to be bytes
# skip-blame just a bytes prefix
Differential Revision: https://phab.mercurial-scm.org/D1888
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false