Again, I don't see a code respository to post this stuff, so I'll just paste it here. I saw use for CamelCase and Underscores to spaces in the names of the tabs from the admin.
So on line 174 of multiedit.php:
// CamelCase => Camel Case: $mclean = preg_replace('/(?<=\\w)(?=[A-Z])/'," $1", $mclean); // Underscores to Spaces: $mclean = str_replace("_", " ", $mclean);
(This goes right after
$mclean = trim($matches);, in case your current source differs from mine.)