Capitalizzazione parole

Preso da Fun with case twiddling

Someone came on #vim asking about "sentence case", meaning Capitalization Of Every Word.

I came up with some bad solutions before learning this:

:s/\(^\|\s\)\([a-z]\)/\1\U\2/g

This inspired me to come up with a silly script for rotating between ALL CAPS, all lower, and Sentence Case.

MiXed Case is set to UPPER.

Then I mapped it (in visual mode) to ~, thus breaking the wonderful tilde :)

Here's the script:

fun! TwiddleCase(str)
if a:str == toupper(a:str)
let ans = tolower(a:str)
elseif a:str == tolower(a:str)
let ans = substitute(a:str,"\\(^\\|\\s\\)\\([a-z]\\)","\\1\\U\\2","g")
else
let ans = toupper(a:str)
endif
return ans
endfun

And the mapping:

vmap ~ x:call setreg('"', TwiddleCase(getreg('"')))^MP

Found an easier way to upper / lower case the whole file/part file.

do a visual select of the lines you want to do the modifications and
gU ==> uppercase and    gu  ==> lowercase