view tests/test-revisions.t @ 51599:b0aaffcb6fcf

tags-cache: directly perform a monimal walk for hgtagsfnodescache warming

We do something narrower than the path retrieving data. So lets use dedicated
code instead.

This provides further useful speedup:

### data-env-vars.name            = mozilla-try-2023-03-22-zstd-sparse-revlog
  # benchmark.name                = hg.debug.debug-update-cache
  # bin-env-vars.hg.flavor        = default
  # bin-env-vars.hg.py-re2-module = default
  # benchmark.variants.pre-state  = warm
before-this-series:  19.947581
skip-fnode-filter:   18.916804   (-5.17%, -1.03)
use-rev-num:         17.493725  (-12.30%, -2.45)
this-changesets:     15.919466  (-20.19%, -4.03)

  $ hg init repo
  $ cd repo

  $ echo 0 > a
  $ hg ci -qAm 0
  $ for i in 5 8 14 43 167; do
  >   hg up -q 0
  >   echo $i > a
  >   hg ci -qm $i
  > done
  $ cat <<EOF >> .hg/hgrc
  > [alias]
  > l = log -T '{rev}:{shortest(node,1)}\n'
  > EOF

  $ hg l
  5:00f
  4:7ba5d
  3:7ba57
  2:72
  1:9
  0:b
  $ cat <<EOF >> .hg/hgrc
  > [experimental]
  > revisions.disambiguatewithin=not 4
  > EOF
  $ hg l
  5:00
  4:7ba5d
  3:7b
  2:72
  1:9
  0:b
9 was unambiguous and still is
  $ hg l -r 9
  1:9
7 was ambiguous and still is
  $ hg l -r 7
  abort: ambiguous revision identifier: 7
  [10]
7b is no longer ambiguous
  $ hg l -r 7b
  3:7b

  $ cd ..