c-guess-region-maxc-guess-region-max is a variable defined in `
cc-guess.el'. Its value is
50000Documentation: The maximum region size for examining indent information with `c-guess'. It takes a long time to examine indent information from a large region; this option helps you limit that time. `nil' means no limit. You can customize this variable. This variable was introduced, or its default value was changed, in version 24.1 of Emacs.