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commands.update() now works properly with a revision of 0
Without this change commands.update() treats an integer 0 as if no revision was passed and updates to the branch head. This fix allows an integer 0 to be detected as a revision number so the working directory is correctly changed to revision 0 rather than the branch head.
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@ -4053,7 +4053,7 @@ def update(ui, repo, node=None, rev=None, clean=False, date=None, check=False):
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if rev and node:
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raise util.Abort(_("please specify just one revision"))
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if not rev:
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if rev is None or rev == '':
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rev = node
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# if we defined a bookmark, we have to remember the original bookmark name
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@ -20,6 +20,22 @@ This command is ancient:
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summary: test
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Verify that updating to revision 0 via commands.update() works properly
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$ cat <<EOF > update_to_rev0.py
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> from mercurial import ui, hg, commands
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> myui = ui.ui()
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> repo = hg.repository(myui, path='.')
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> commands.update(myui, repo, rev=0)
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> EOF
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$ hg up null
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0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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$ python ./update_to_rev0.py
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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$ hg identify -n
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0
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Poke around at hashes:
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$ hg manifest --debug
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