Yes, mouse-1 follows links in both Gnus and Info. grep and compile do
not work. In addition, the highlighting in some lines of the grep output
seems to be wrong. It seems that when the line does not have any
preceding whitespace, the highlight extends out past the filename and
line number, sometimes to the whole line, but I've seen partial lines
(perhaps due to some character that is matching the regexp) and I think
I've seen lines with no highlighting as well.
Can you send a test case for any of these problems?