Some time ago, I wanted to x-out all constant C-strings (characters within
") in a C-ﬁle and wondered how to do that with Vim.
E. g. when you want to cross out every character of a
Hello World String like this:
/* before */ printf( "Hello World\n" ); /* after */ printf( "XXXXXXXXXXXXX" );
Finally, also with the help of the Vim IRC channel we came to this regex:
s/"\([^"]*\)"/\='"' . substitute(submatch(1),".","X","g") . '"'/gc
Pretty Funny, by mostly useless.