perf: use the `perf--` prefix for perf command

perf: use the `perf--` prefix for perf command

This is the one command namespace where they should not be any ambiguity about
command that should be in it. The perf extensions is only adding performance
related command.

so this is a good ground to start putting dash folding to the tests.

Differential Revision: https://phab.mercurial-scm.org/D9516

--- a/contrib/perf.py	Tue Jan 19 12:22:05 2021 -0500
+++ b/contrib/perf.py	Fri Dec 04 10:11:01 2020 +0100
@@ -744,7 +744,7 @@
 # perf commands
 
 
-@command(b'perfwalk', formatteropts)
+@command(b'perf--walk', formatteropts)
 def perfwalk(ui, repo, *pats, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -759,7 +759,7 @@
     fm.end()
 
 
-@command(b'perfannotate', formatteropts)
+@command(b'perf--annotate', formatteropts)
 def perfannotate(ui, repo, f, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -769,7 +769,7 @@
 
 
 @command(
-    b'perfstatus',
+    b'perf--status',
     [
         (b'u', b'unknown', False, b'ask status to look for unknown files'),
         (b'', b'dirstate', False, b'benchmark the internal dirstate call'),
@@ -806,7 +806,7 @@
     fm.end()
 
 
-@command(b'perfaddremove', formatteropts)
+@command(b'perf--addremove', formatteropts)
 def perfaddremove(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -837,7 +837,7 @@
         cl._nodepos = None
 
 
-@command(b'perfheads', formatteropts)
+@command(b'perf--heads', formatteropts)
 def perfheads(ui, repo, **opts):
     """benchmark the computation of a changelog heads"""
     opts = _byteskwargs(opts)
@@ -855,7 +855,7 @@
 
 
 @command(
-    b'perftags',
+    b'perf--tags',
     formatteropts
     + [
         (b'', b'clear-revlogs', False, b'refresh changelog and manifest'),
@@ -880,7 +880,7 @@
     fm.end()
 
 
-@command(b'perfancestors', formatteropts)
+@command(b'perf--ancestors', formatteropts)
 def perfancestors(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -894,7 +894,7 @@
     fm.end()
 
 
-@command(b'perfancestorset', formatteropts)
+@command(b'perf--ancestorset', formatteropts)
 def perfancestorset(ui, repo, revset, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -910,7 +910,7 @@
     fm.end()
 
 
-@command(b'perfdiscovery', formatteropts, b'PATH')
+@command(b'perf--discovery', formatteropts, b'PATH')
 def perfdiscovery(ui, repo, path, **opts):
     """benchmark discovery between local repo and the peer at given path"""
     repos = [repo, None]
@@ -928,7 +928,7 @@
 
 
 @command(
-    b'perfbookmarks',
+    b'perf--bookmarks',
     formatteropts
     + [
         (b'', b'clear-revlogs', False, b'refresh changelog and manifest'),
@@ -953,7 +953,7 @@
     fm.end()
 
 
-@command(b'perfbundleread', formatteropts, b'BUNDLE')
+@command(b'perf--bundleread', formatteropts, b'BUNDLE')
 def perfbundleread(ui, repo, bundlepath, **opts):
     """Benchmark reading of bundle files.
 
@@ -1080,7 +1080,7 @@
 
 
 @command(
-    b'perfchangegroupchangelog',
+    b'perf--changegroupchangelog',
     formatteropts
     + [
         (b'', b'cgversion', b'02', b'changegroup version'),
@@ -1116,7 +1116,7 @@
     fm.end()
 
 
-@command(b'perfdirs', formatteropts)
+@command(b'perf--dirs', formatteropts)
 def perfdirs(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1132,7 +1132,7 @@
 
 
 @command(
-    b'perfdirstate',
+    b'perf--dirstate',
     [
         (
             b'',
@@ -1195,7 +1195,7 @@
     fm.end()
 
 
-@command(b'perfdirstatedirs', formatteropts)
+@command(b'perf--dirstatedirs', formatteropts)
 def perfdirstatedirs(ui, repo, **opts):
     """benchmap a 'dirstate.hasdir' call from an empty `dirs` cache"""
     opts = _byteskwargs(opts)
@@ -1212,7 +1212,7 @@
     fm.end()
 
 
-@command(b'perfdirstatefoldmap', formatteropts)
+@command(b'perf--dirstatefoldmap', formatteropts)
 def perfdirstatefoldmap(ui, repo, **opts):
     """benchmap a `dirstate._map.filefoldmap.get()` request
 
@@ -1233,7 +1233,7 @@
     fm.end()
 
 
-@command(b'perfdirfoldmap', formatteropts)
+@command(b'perf--dirfoldmap', formatteropts)
 def perfdirfoldmap(ui, repo, **opts):
     """benchmap a `dirstate._map.dirfoldmap.get()` request
 
@@ -1255,7 +1255,7 @@
     fm.end()
 
 
-@command(b'perfdirstatewrite', formatteropts)
+@command(b'perf--dirstatewrite', formatteropts)
 def perfdirstatewrite(ui, repo, **opts):
     """benchmap the time it take to write a dirstate on disk"""
     opts = _byteskwargs(opts)
@@ -1297,7 +1297,7 @@
 
 
 @command(
-    b'perfmergecalculate',
+    b'perf--mergecalculate',
     [
         (b'r', b'rev', b'.', b'rev to merge against'),
         (b'', b'from', b'', b'rev to merge from'),
@@ -1330,7 +1330,7 @@
 
 
 @command(
-    b'perfmergecopies',
+    b'perf--mergecopies',
     [
         (b'r', b'rev', b'.', b'rev to merge against'),
         (b'', b'from', b'', b'rev to merge from'),
@@ -1353,7 +1353,7 @@
     fm.end()
 
 
-@command(b'perfpathcopies', [], b"REV REV")
+@command(b'perf--pathcopies', [], b"REV REV")
 def perfpathcopies(ui, repo, rev1, rev2, **opts):
     """benchmark the copy tracing logic"""
     opts = _byteskwargs(opts)
@@ -1369,7 +1369,7 @@
 
 
 @command(
-    b'perfphases',
+    b'perf--phases',
     [
         (b'', b'full', False, b'include file reading time too'),
     ],
@@ -1394,7 +1394,7 @@
     fm.end()
 
 
-@command(b'perfphasesremote', [], b"[DEST]")
+@command(b'perf--phasesremote', [], b"[DEST]")
 def perfphasesremote(ui, repo, dest=None, **opts):
     """benchmark time needed to analyse phases of the remote server"""
     from mercurial.node import bin
@@ -1455,7 +1455,7 @@
 
 
 @command(
-    b'perfmanifest',
+    b'perf--manifest',
     [
         (b'm', b'manifest-rev', False, b'Look up a manifest node revision'),
         (b'', b'clear-disk', False, b'clear on-disk caches too'),
@@ -1499,7 +1499,7 @@
     fm.end()
 
 
-@command(b'perfchangeset', formatteropts)
+@command(b'perf--changeset', formatteropts)
 def perfchangeset(ui, repo, rev, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1513,7 +1513,7 @@
     fm.end()
 
 
-@command(b'perfignore', formatteropts)
+@command(b'perf--ignore', formatteropts)
 def perfignore(ui, repo, **opts):
     """benchmark operation related to computing ignore"""
     opts = _byteskwargs(opts)
@@ -1532,7 +1532,7 @@
 
 
 @command(
-    b'perfindex',
+    b'perf--index',
     [
         (b'', b'rev', [], b'revision to be looked up (default tip)'),
         (b'', b'no-lookup', None, b'do not revision lookup post creation'),
@@ -1596,7 +1596,7 @@
 
 
 @command(
-    b'perfnodemap',
+    b'perf--nodemap',
     [
         (b'', b'rev', [], b'revision to be looked up (default tip)'),
         (b'', b'clear-caches', True, b'clear revlog cache between calls'),
@@ -1667,7 +1667,7 @@
     fm.end()
 
 
-@command(b'perfstartup', formatteropts)
+@command(b'perf--startup', formatteropts)
 def perfstartup(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1685,7 +1685,7 @@
     fm.end()
 
 
-@command(b'perfparents', formatteropts)
+@command(b'perf--parents', formatteropts)
 def perfparents(ui, repo, **opts):
     """benchmark the time necessary to fetch one changeset's parents.
 
@@ -1712,7 +1712,7 @@
     fm.end()
 
 
-@command(b'perfctxfiles', formatteropts)
+@command(b'perf--ctxfiles', formatteropts)
 def perfctxfiles(ui, repo, x, **opts):
     opts = _byteskwargs(opts)
     x = int(x)
@@ -1725,7 +1725,7 @@
     fm.end()
 
 
-@command(b'perfrawfiles', formatteropts)
+@command(b'perf--rawfiles', formatteropts)
 def perfrawfiles(ui, repo, x, **opts):
     opts = _byteskwargs(opts)
     x = int(x)
@@ -1739,7 +1739,7 @@
     fm.end()
 
 
-@command(b'perflookup', formatteropts)
+@command(b'perf--lookup', formatteropts)
 def perflookup(ui, repo, rev, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1748,7 +1748,7 @@
 
 
 @command(
-    b'perflinelogedits',
+    b'perf--linelogedits',
     [
         (b'n', b'edits', 10000, b'number of edits'),
         (b'', b'max-hunk-lines', 10, b'max lines in a hunk'),
@@ -1786,7 +1786,7 @@
     fm.end()
 
 
-@command(b'perfrevrange', formatteropts)
+@command(b'perf--revrange', formatteropts)
 def perfrevrange(ui, repo, *specs, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1795,7 +1795,7 @@
     fm.end()
 
 
-@command(b'perfnodelookup', formatteropts)
+@command(b'perf--nodelookup', formatteropts)
 def perfnodelookup(ui, repo, rev, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1814,7 +1814,7 @@
 
 
 @command(
-    b'perflog',
+    b'perf--log',
     [(b'', b'rename', False, b'ask log to follow renames')] + formatteropts,
 )
 def perflog(ui, repo, rev=None, **opts):
@@ -1832,7 +1832,7 @@
     fm.end()
 
 
-@command(b'perfmoonwalk', formatteropts)
+@command(b'perf--moonwalk', formatteropts)
 def perfmoonwalk(ui, repo, **opts):
     """benchmark walking the changelog backwards
 
@@ -1851,7 +1851,7 @@
 
 
 @command(
-    b'perftemplating',
+    b'perf--templating',
     [
         (b'r', b'rev', [], b'revisions to run the template on'),
     ]
@@ -1941,7 +1941,7 @@
 
 
 @command(
-    b'perfhelper-mergecopies',
+    b'perf--helper-mergecopies',
     formatteropts
     + [
         (b'r', b'revs', [], b'restrict search to these revisions'),
@@ -2124,7 +2124,7 @@
 
 
 @command(
-    b'perfhelper-pathcopies',
+    b'perf--helper-pathcopies',
     formatteropts
     + [
         (b'r', b'revs', [], b'restrict search to these revisions'),
@@ -2263,7 +2263,7 @@
         _displaystats(ui, opts, entries, alldata)
 
 
-@command(b'perfcca', formatteropts)
+@command(b'perf--cca', formatteropts)
 def perfcca(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2271,7 +2271,7 @@
     fm.end()
 
 
-@command(b'perffncacheload', formatteropts)
+@command(b'perf--fncacheload', formatteropts)
 def perffncacheload(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2284,7 +2284,7 @@
     fm.end()
 
 
-@command(b'perffncachewrite', formatteropts)
+@command(b'perf--fncachewrite', formatteropts)
 def perffncachewrite(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2304,7 +2304,7 @@
     fm.end()
 
 
-@command(b'perffncacheencode', formatteropts)
+@command(b'perf--fncacheencode', formatteropts)
 def perffncacheencode(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2348,7 +2348,7 @@
 
 
 @command(
-    b'perfbdiff',
+    b'perf--bdiff',
     revlogopts
     + formatteropts
     + [
@@ -2464,7 +2464,7 @@
 
 
 @command(
-    b'perfunidiff',
+    b'perf--unidiff',
     revlogopts
     + formatteropts
     + [
@@ -2543,7 +2543,7 @@
     fm.end()
 
 
-@command(b'perfdiffwd', formatteropts)
+@command(b'perf--diffwd', formatteropts)
 def perfdiffwd(ui, repo, **opts):
     """Profile diff of working directory changes"""
     opts = _byteskwargs(opts)
@@ -2568,7 +2568,7 @@
     fm.end()
 
 
-@command(b'perfrevlogindex', revlogopts + formatteropts, b'-c|-m|FILE')
+@command(b'perf--revlogindex', revlogopts + formatteropts, b'-c|-m|FILE')
 def perfrevlogindex(ui, repo, file_=None, **opts):
     """Benchmark operations against a revlog index.
 
@@ -2704,7 +2704,7 @@
 
 
 @command(
-    b'perfrevlogrevisions',
+    b'perf--revlogrevisions',
     revlogopts
     + formatteropts
     + [
@@ -2754,7 +2754,7 @@
 
 
 @command(
-    b'perfrevlogwrite',
+    b'perf--revlogwrite',
     revlogopts
     + formatteropts
     + [
@@ -3047,7 +3047,7 @@
 
 
 @command(
-    b'perfrevlogchunks',
+    b'perf--revlogchunks',
     revlogopts
     + formatteropts
     + [
@@ -3176,7 +3176,7 @@
 
 
 @command(
-    b'perfrevlogrevision',
+    b'perf--revlogrevision',
     revlogopts
     + formatteropts
     + [(b'', b'cache', False, b'use caches instead of clearing')],
@@ -3319,7 +3319,7 @@
 
 
 @command(
-    b'perfrevset',
+    b'perf--revset',
     [
         (b'C', b'clear', False, b'clear volatile cache between each call.'),
         (b'', b'contexts', False, b'obtain changectx for each revision'),
@@ -3352,7 +3352,7 @@
 
 
 @command(
-    b'perfvolatilesets',
+    b'perf--volatilesets',
     [
         (b'', b'clear-obsstore', False, b'drop obsstore between each call.'),
     ]
@@ -3401,7 +3401,7 @@
 
 
 @command(
-    b'perfbranchmap',
+    b'perf--branchmap',
     [
         (b'f', b'full', False, b'Includes build time of subset'),
         (
@@ -3492,7 +3492,7 @@
 
 
 @command(
-    b'perfbranchmapupdate',
+    b'perf--branchmapupdate',
     [
         (b'', b'base', [], b'subset of revision to start from'),
         (b'', b'target', [], b'subset of revision to end with'),
@@ -3602,7 +3602,7 @@
 
 
 @command(
-    b'perfbranchmapload',
+    b'perf--branchmapload',
     [
         (b'f', b'filter', b'', b'Specify repoview filter'),
         (b'', b'list', False, b'List brachmap filter caches'),
@@ -3661,7 +3661,7 @@
     fm.end()
 
 
-@command(b'perfloadmarkers')
+@command(b'perf--loadmarkers')
 def perfloadmarkers(ui, repo):
     """benchmark the time to parse the on-disk markers for a repo
 
@@ -3673,7 +3673,7 @@
 
 
 @command(
-    b'perflrucachedict',
+    b'perf--lrucachedict',
     formatteropts
     + [
         (b'', b'costlimit', 0, b'maximum total cost of items in cache'),
@@ -3829,7 +3829,7 @@
 
 
 @command(
-    b'perfwrite',
+    b'perf--write',
     formatteropts
     + [
         (b'', b'write-method', b'write', b'ui write method'),
@@ -3892,7 +3892,7 @@
 
 
 @command(
-    b'perfprogress',
+    b'perf--progress',
     formatteropts
     + [
         (b'', b'topic', b'topic', b'topic for progress messages'),

--- a/tests/test-contrib-perf.t	Tue Jan 19 12:22:05 2021 -0500
+++ b/tests/test-contrib-perf.t	Fri Dec 04 10:11:01 2020 +0100
@@ -78,109 +78,121 @@
   
   list of commands:
   
-   perfaddremove
+   perf--addremove
+                 (no help text available)
+   perf--ancestors
                  (no help text available)
-   perfancestors
+   perf--ancestorset
                  (no help text available)
-   perfancestorset
+   perf--annotate
                  (no help text available)
-   perfannotate  (no help text available)
-   perfbdiff     benchmark a bdiff between revisions
-   perfbookmarks
+   perf--bdiff   benchmark a bdiff between revisions
+   perf--bookmarks
                  benchmark parsing bookmarks from disk to memory
-   perfbranchmap
+   perf--branchmap
                  benchmark the update of a branchmap
-   perfbranchmapload
+   perf--branchmapload
                  benchmark reading the branchmap
-   perfbranchmapupdate
+   perf--branchmapupdate
                  benchmark branchmap update from for <base> revs to <target>
                  revs
-   perfbundleread
+   perf--bundleread
                  Benchmark reading of bundle files.
-   perfcca       (no help text available)
-   perfchangegroupchangelog
+   perf--cca     (no help text available)
+   perf--changegroupchangelog
                  Benchmark producing a changelog group for a changegroup.
-   perfchangeset
+   perf--changeset
+                 (no help text available)
+   perf--ctxfiles
                  (no help text available)
-   perfctxfiles  (no help text available)
-   perfdiffwd    Profile diff of working directory changes
-   perfdirfoldmap
+   perf--diffwd  Profile diff of working directory changes
+   perf--dirfoldmap
                  benchmap a 'dirstate._map.dirfoldmap.get()' request
-   perfdirs      (no help text available)
-   perfdirstate  benchmap the time of various distate operations
-   perfdirstatedirs
+   perf--dirs    (no help text available)
+   perf--dirstate
+                 benchmap the time of various distate operations
+   perf--dirstatedirs
                  benchmap a 'dirstate.hasdir' call from an empty 'dirs' cache
-   perfdirstatefoldmap
+   perf--dirstatefoldmap
                  benchmap a 'dirstate._map.filefoldmap.get()' request
-   perfdirstatewrite
+   perf--dirstatewrite
                  benchmap the time it take to write a dirstate on disk
-   perfdiscovery
+   perf--discovery
                  benchmark discovery between local repo and the peer at given
                  path
-   perffncacheencode
+   perf--fncacheencode
                  (no help text available)
-   perffncacheload
+   perf--fncacheload
                  (no help text available)
-   perffncachewrite
+   perf--fncachewrite
                  (no help text available)
-   perfheads     benchmark the computation of a changelog heads
-   perfhelper-mergecopies
+   perf--heads   benchmark the computation of a changelog heads
+   perf--helper-mergecopies
                  find statistics about potential parameters for
                  'perfmergecopies'
-   perfhelper-pathcopies
+   perf--helper-pathcopies
                  find statistic about potential parameters for the
                  'perftracecopies'
-   perfignore    benchmark operation related to computing ignore
-   perfindex     benchmark index creation time followed by a lookup
-   perflinelogedits
+   perf--ignore  benchmark operation related to computing ignore
+   perf--index   benchmark index creation time followed by a lookup
+   perf--linelogedits
                  (no help text available)
-   perfloadmarkers
+   perf--loadmarkers
                  benchmark the time to parse the on-disk markers for a repo
-   perflog       (no help text available)
-   perflookup    (no help text available)
-   perflrucachedict
+   perf--log     (no help text available)
+   perf--lookup  (no help text available)
+   perf--lrucachedict
                  (no help text available)
-   perfmanifest  benchmark the time to read a manifest from disk and return a
+   perf--manifest
+                 benchmark the time to read a manifest from disk and return a
                  usable
-   perfmergecalculate
+   perf--mergecalculate
                  (no help text available)
-   perfmergecopies
+   perf--mergecopies
                  measure runtime of 'copies.mergecopies'
-   perfmoonwalk  benchmark walking the changelog backwards
-   perfnodelookup
+   perf--moonwalk
+                 benchmark walking the changelog backwards
+   perf--nodelookup
                  (no help text available)
-   perfnodemap   benchmark the time necessary to look up revision from a cold
+   perf--nodemap
+                 benchmark the time necessary to look up revision from a cold
                  nodemap
-   perfparents   benchmark the time necessary to fetch one changeset's parents.
-   perfpathcopies
+   perf--parents
+                 benchmark the time necessary to fetch one changeset's parents.
+   perf--pathcopies
                  benchmark the copy tracing logic
-   perfphases    benchmark phasesets computation
-   perfphasesremote
+   perf--phases  benchmark phasesets computation
+   perf--phasesremote
                  benchmark time needed to analyse phases of the remote server
-   perfprogress  printing of progress bars
-   perfrawfiles  (no help text available)
-   perfrevlogchunks
+   perf--progress
+                 printing of progress bars
+   perf--rawfiles
+                 (no help text available)
+   perf--revlogchunks
                  Benchmark operations on revlog chunks.
-   perfrevlogindex
+   perf--revlogindex
                  Benchmark operations against a revlog index.
-   perfrevlogrevision
+   perf--revlogrevision
                  Benchmark obtaining a revlog revision.
-   perfrevlogrevisions
+   perf--revlogrevisions
                  Benchmark reading a series of revisions from a revlog.
-   perfrevlogwrite
+   perf--revlogwrite
                  Benchmark writing a series of revisions to a revlog.
-   perfrevrange  (no help text available)
-   perfrevset    benchmark the execution time of a revset
-   perfstartup   (no help text available)
-   perfstatus    benchmark the performance of a single status call
-   perftags      (no help text available)
-   perftemplating
+   perf--revrange
+                 (no help text available)
+   perf--revset  benchmark the execution time of a revset
+   perf--startup
+                 (no help text available)
+   perf--status  benchmark the performance of a single status call
+   perf--tags    (no help text available)
+   perf--templating
                  test the rendering time of a given template
-   perfunidiff   benchmark a unified diff between revisions
-   perfvolatilesets
+   perf--unidiff
+                 benchmark a unified diff between revisions
+   perf--volatilesets
                  benchmark the computation of various volatile set
-   perfwalk      (no help text available)
-   perfwrite     microbenchmark ui.write (and others)
+   perf--walk    (no help text available)
+   perf--write   microbenchmark ui.write (and others)
   
   (use 'hg help -v perf' to show built-in aliases and global options)
   $ hg perfaddremove