+
−# This talk is gonna be about a feature called "revsets". What are they?
+
−
+
−# The Octave repo (yeah, I work on Octave)
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−cd coding/vcs/octave
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−
+
−# Let's look around
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−ls
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−hg summary
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−hg log -G
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−hg book
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−
+
−
+
−# Several ways to refer to a commit
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−hg log -r mtlpy
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−hg log -r 17395
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−hg log -r ffe05002f437
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−hg log -r tip
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−hg log -r -1
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−hg log -r -2
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−
+
−# But more advanced!
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−hg log -r -2::-1
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−hg log -r .
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−hg log -r .~1
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−hg log -r .^
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−
+
−# Git users, I know what you're thinking...
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−git help revisions
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−
+
−# But revsets are more advanced than that. Let's take a quick peek.
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−# It's really its own DSL.
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−hg help revsets
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−
+
−# So last example could also have been
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−hg log -r 'p1(.)'
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−
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−# More example, the descendant revset, combining with other revset
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−# functions.
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−hg log -r 'descendants(@)'
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−
+
−# Oops, let's skip @
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−hg log -r 'descendants(@) and not @'
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−hg log -r 'min(descendants(@) and not @)'
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−hg log -r 'reverse(descendants(@) and not @)'
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−
+
−# This revset seems handy, let's alias it
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−emacs ~/.hgrc
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−
+
−# Of course, anywhere that you can fit revisions, you can also use a
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−# revset!
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−hg histedit -r 'children(@)'
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−
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−# Only bisect files that touch a particular files
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−hg bisect --skip 'not file("jit-ir.cc")'
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−
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−# In which release was histedit merged into core hg?
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−cd ../mercurial-source
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−hg log -r 'min(adds(hgext/histedit.py):: and tag())'
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−
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−# Let's write our own revset!
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−emacs ../revset-talk/lol.py
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−
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−# And let's have fun with it
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−emacs ~/.hgrc
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−
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−cd ../octave
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−hg log -r 'lol()'
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−hg log -r 'lol() and user(jordigh)'
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−hg log --patch --verbose --rev 'lol() and user(jordigh) and keyword(wisdom)'