Vim: ignore casing in search

escape sequence anywhere in the pattern \c

/\ccmake

will match cmake and CMake or cMake

/c\cmake

will match cMake and cmake but not CMake

the inverse of \c is \C

/\cc\CMake

will match CMake and cMake but not cmake

further options:

This will ignore casing in all searching:

:set ignorecase

unset with no prefix as usual:

:set noignorecase

In addition to the above this will ignore casing if search string is all lowercase, but will be case sensitive if the search string contains any upper case letter. The ignorecase must me set.

:set smartcase