acme/Watch: Add -X flag #96
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It is sometimes useful to watch 1. only a single file or 2. every file in Acme. The “-X regexp” option is analogous to Edit X/regexp/. The idioms for the use cases above are: 1. Watch -X $% cmd… 2. Watch -X . cmd… I've considered adding the complementary -Y flag, but it seemed less useful.
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This is a prove-of-concept of a feature I often find useful. I'm
wondering whether others would find this useful as well.
Feel free to close this pull request if this is a non-goal of the
Watch command.