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pycompat: export queue module instead of symbols in module (API)...

pycompat: export queue module instead of symbols in module (API) Previously, pycompat and util re-exported individual symbols from the queue module. This had the side-effect of forcing the loading of the queue module whenever pycompat/util was imported. These symbols aren't used very often. So importing the module to get a handle on the symbols is wasteful. This commit changes pycompat so it no longer exports the individual symbols in the queue module. Instead, we make the imported module a "public" symbol. We drop the individual symbol aliases from the util module. All consumers are updated to use pycompat.queue.* instead. This change makes 300 invocations of `hg log -r. -T '{rev}\n'` a little faster: before: 18.44s after: 17.87s Differential Revision: https://phab.mercurial-scm.org/D3441

Pulkit Goyal - - Load All Authors

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        $ hg init

        $ echo foo > foo

        $ echo bar > bar

        $ hg ci -qAm 'add foo bar'

        $ echo foo2 >> foo

        $ echo bleh > bar

        $ hg ci -m 'change foo bar'

        $ hg up -qC 0

        $ hg mv foo foo1

        $ echo foo1 > foo1

        $ hg cat foo >> foo1

        $ hg ci -m 'mv foo foo1'

        created new head

        $ hg merge

        merging foo1 and foo to foo1

        1 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ hg debugstate --nodates

        m   0         -2 unset               bar

        m   0         -2 unset               foo1

        copy: foo -> foo1

        $ hg st -q

        M bar

        M foo1

      Removing foo1 and bar:

        $ cp foo1 F

        $ cp bar B

        $ hg rm -f foo1 bar

        $ hg debugstate --nodates

        r   0         -1 set                 bar

        r   0         -1 set                 foo1

        copy: foo -> foo1

        $ hg st -qC

        R bar

        R foo1

      Re-adding foo1 and bar:

        $ cp F foo1

        $ cp B bar

        $ hg add -v foo1 bar

        adding bar

        adding foo1

        $ hg debugstate --nodates

        n   0         -2 unset               bar

        n   0         -2 unset               foo1

        copy: foo -> foo1

        $ hg st -qC

        M bar

        M foo1

          foo

      Reverting foo1 and bar:

        $ hg revert -vr . foo1 bar

        saving current version of bar as bar.orig

        reverting bar

        saving current version of foo1 as foo1.orig

        reverting foo1

        $ hg debugstate --nodates

        n   0         -2 unset               bar

        n   0         -2 unset               foo1

        copy: foo -> foo1

        $ hg st -qC

        M bar

        M foo1

          foo

        $ hg diff

      Merge should not overwrite local file that is untracked after remove

        $ rm *

        $ hg up -qC

        $ hg rm bar

        $ hg ci -m 'remove bar'

        $ echo 'memories of buried pirate treasure' > bar

        $ hg merge

        bar: untracked file differs

        abort: untracked files in working directory differ from files in requested revision

        [255]

        $ cat bar

        memories of buried pirate treasure

      Those who use force will lose

        $ hg merge -f

        other [merge rev] changed bar which local [working copy] deleted

        use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u

        merging foo1 and foo to foo1

        0 files updated, 1 files merged, 0 files removed, 1 files unresolved

        use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon

        [1]

        $ cat bar

        bleh

        $ hg st

        M bar

        M foo1

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				$ hg init

				$ echo foo > foo
				$ echo bar > bar
				$ hg ci -qAm 'add foo bar'

				$ echo foo2 >> foo
				$ echo bleh > bar
				$ hg ci -m 'change foo bar'

				$ hg up -qC 0
				$ hg mv foo foo1
				$ echo foo1 > foo1
				$ hg cat foo >> foo1
				$ hg ci -m 'mv foo foo1'
				created new head

				$ hg merge
				merging foo1 and foo to foo1
				1 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ hg debugstate --nodates
				m 0 -2 unset bar
				m 0 -2 unset foo1
				copy: foo -> foo1

				$ hg st -q
				M bar
				M foo1


				Removing foo1 and bar:

				$ cp foo1 F
				$ cp bar B
				$ hg rm -f foo1 bar

				$ hg debugstate --nodates
				r 0 -1 set bar
				r 0 -1 set foo1
				copy: foo -> foo1

				$ hg st -qC
				R bar
				R foo1


				Re-adding foo1 and bar:

				$ cp F foo1
				$ cp B bar
				$ hg add -v foo1 bar
				adding bar
				adding foo1

				$ hg debugstate --nodates
				n 0 -2 unset bar
				n 0 -2 unset foo1
				copy: foo -> foo1

				$ hg st -qC
				M bar
				M foo1
				foo


				Reverting foo1 and bar:

				$ hg revert -vr . foo1 bar
				saving current version of bar as bar.orig
				reverting bar
				saving current version of foo1 as foo1.orig
				reverting foo1

				$ hg debugstate --nodates
				n 0 -2 unset bar
				n 0 -2 unset foo1
				copy: foo -> foo1

				$ hg st -qC
				M bar
				M foo1
				foo

				$ hg diff

				Merge should not overwrite local file that is untracked after remove

				$ rm *
				$ hg up -qC
				$ hg rm bar
				$ hg ci -m 'remove bar'
				$ echo 'memories of buried pirate treasure' > bar
				$ hg merge
				bar: untracked file differs
				abort: untracked files in working directory differ from files in requested revision
				[255]
				$ cat bar
				memories of buried pirate treasure

				Those who use force will lose

				$ hg merge -f
				other [merge rev] changed bar which local [working copy] deleted
				use (c)hanged version, leave (d)eleted, or leave (u)nresolved? u
				merging foo1 and foo to foo1
				0 files updated, 1 files merged, 0 files removed, 1 files unresolved
				use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
				[1]
				$ cat bar
				bleh
				$ hg st
				M bar
				M foo1