[Bug Report] Editor Breaks in C Language Mode if Line Begins with Slash Character
Happy New Year, @fox0430!

First of all, I am sorry that I did not submit a suggestion for the Shell syntax highlighting, yet.  The days before Christmas are always somehow chaotic and I did not had the time to take care for the implementation.  I will suggest a basic implementation by the end of the month.

The bug this issue is about occurred when I revisited other syntax highlighting implementation in order to ensure that nothing will break.  Therefore, I created a blank C header file for testing purposes, `test.h`.  I tried to add a comment in the first line by typing `/` in Insert Mode.  This broke the editor.  I found out so far that a crash will happen if the slash starts the line, any preceding characters seem to prevent the editor from breaking.