The C lexer should consider angle brackets after #include

Consider the following:

#include <else.h>

If the option to lex within preprocessor lines is enabled, the '<', '>', and '.' will be coloured as operators and the "else" will be coloured as a keyword, when the correct behaviour is to treat '<' as the start of a quoted string and '>' as the end of a quoted string. Angle brackets should be treated as quotes only if the line is an #include preprocessor directive.

I am submitting a patch that should address this issue.