haskell-cabal: fix (comment-dwim) by correcting comment-start-skip #1870
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Prior to this commit using (comment-dwim) over a comment in .cabal file that doesn't start at the beginning of a line resulted in it adding even more comments. E.g. this:
resulted in:
This is because
comment-start-skip
was including whitespace that isn't part of the comment syntax. Fix this by only limiting the regexp to the comment part.The resulting regexp is basically same as the one in haskell-mode, barring that that one also takes into account
{-
comment starter, which isn't a thing in .cabal files.Fixes: #1743