view tests/test-absorb-edit-lines.t @ 41247:a89b20a49c13

rust-cpython: using MissingAncestors from Python code As precedently done with LazyAncestors on cpython.rs, we test for the presence of the 'rustext' module. incrementalmissingrevs() has two callers within the Mercurial core: `setdiscovery.partialdiscovery` and the `only()` revset. This move shows a significant discovery performance improvement in cases where the baseline is slow: using perfdiscovery on the PyPy repos, prepared with `contrib/discovery-helper <repo> 50 100`, we get averaged medians of 403ms with the Rust version vs 742ms without (about 45% better). But there are still indications that performance can be worse in cases the baseline is fast, possibly due to the conversion from Python to Rust and back becoming the bottleneck. We could measure this on mozilla-central in cases were the delta is just a few changesets. This requires confirmation, but if that's the reason, then an upcoming `partialdiscovery` fully in Rust should solve the problem. Differential Revision: https://phab.mercurial-scm.org/D5551
author Georges Racinet <georges.racinet@octobus.net>
date Fri, 30 Nov 2018 14:35:57 +0100
parents 31dfa7dac4c9
children 3cd57e2be49b
line wrap: on
line source

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > absorb=
  > EOF

  $ hg init repo1
  $ cd repo1

Make some commits:

  $ for i in 1 2 3; do
  >   echo $i >> a
  >   hg commit -A a -m "commit $i" -q
  > done

absorb --edit-lines will run the editor if filename is provided:

  $ hg absorb --edit-lines --apply-changes
  nothing applied
  [1]
  $ HGEDITOR=cat hg absorb --edit-lines --apply-changes a
  HG: editing a
  HG: "y" means the line to the right exists in the changeset to the top
  HG:
  HG: /---- 4ec16f85269a commit 1
  HG: |/--- 5c5f95224a50 commit 2
  HG: ||/-- 43f0a75bede7 commit 3
  HG: |||
      yyy : 1
       yy : 2
        y : 3
  nothing applied
  [1]

Edit the file using --edit-lines:

  $ cat > editortext << EOF
  >       y : a
  >      yy :  b
  >      y  : c
  >     yy  : d  
  >     y y : e
  >     y   : f
  >     yyy : g
  > EOF
  $ HGEDITOR='cat editortext >' hg absorb -q --edit-lines --apply-changes a
  $ hg cat -r 0 a
  d  
  e
  f
  g
  $ hg cat -r 1 a
   b
  c
  d  
  g
  $ hg cat -r 2 a
  a
   b
  e
  g