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I want to add some rudimentary filename completion for programs like ghc, ghci (Haskell compilers), lyx (typesetting program), namely that hitting [tab] after one of the above should offer autocomplete suggestions for files ending in ".hs" or ".lyx".

What's the easiest way to do this in zsh?

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up vote 4 down vote accepted
compdef '_files -g "*.hs *.lyx"' ghc ghci lyx

See man zshcompsys | less -p '^\s*compdef \[' and generally man zshcompsys.

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fantastic, thanks so much!! (The question was badly worded; I actually meant compdef '_files -g "*.hs"' ghc ghci; compdef '_files -g "*.lyx"' lyx) – gatoatigrado Jun 13 '11 at 17:27

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