help: do not abort topicmatch() because of unimportable extensions
This is alternative workaround to D1198, originally spotted by the earlier
version of the releasenotes extension.
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false