Code submissions have continually suffered from formatting
inconsistencies that constantly have to be addressed. Using
clang-format simplifies this by making code formatting more consistent,
and allows automation of the code formatting so that maintainers can
focus more on the code itself instead of code formatting.
When adding a new regex rule to the Automatic Scene Switcher, OBS would
crash if the regex was invalid. This was because the regex was added to
the Regex object without a test or try-catch. This commit fixes that
behavior, and adds a warning message when attempting to add an invalid
regex.
