[BLU] Reversing case in emacs

[david at kramer.ne.mediaone.net (David Kramer)]

Jerry Feldman wrote:
> 
> I have a case where I need to flip the case on an individual character.
> Short of writing an emacs command, it there a command (or more
> specifically an emacs lisp function) in emacs to either reverse case, up
> case, or down case a single character. In vi, there is a ~ which reverse
> cases a character.


downcase-region is an interactive built-in function.

Convert the region to lower case.  In programs, wants two arguments.
These arguments specify the starting and ending character numbers of
the region to operate on.  When used as a command, the text between
point and the mark is operated on.

(downcase-region BEG END)


upcase-region is an interactive built-in function.

Convert the region to upper case.  In programs, wants two arguments.
These arguments specify the starting and ending character numbers of
the region to operate on.  When used as a command, the text between
point and the mark is operated on.
See also `capitalize-region'.

(upcase-region BEG END)


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