--- a/contrib/perf.py	Mon Jan 25 23:13:01 2021 +0100
+++ b/contrib/perf.py	Mon Jan 25 16:46:51 2021 +0100
@@ -744,7 +744,7 @@
 # perf commands
 
 
-@command(b'perf--walk', formatteropts)
+@command(b'perf::walk|perfwalk', formatteropts)
 def perfwalk(ui, repo, *pats, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -759,7 +759,7 @@
     fm.end()
 
 
-@command(b'perf--annotate', formatteropts)
+@command(b'perf::annotate|perfannotate', formatteropts)
 def perfannotate(ui, repo, f, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -769,7 +769,7 @@
 
 
 @command(
-    b'perf--status',
+    b'perf::status|perfstatus',
     [
         (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'perf--addremove', formatteropts)
+@command(b'perf::addremove|perfaddremove', formatteropts)
 def perfaddremove(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -837,7 +837,7 @@
         cl._nodepos = None
 
 
-@command(b'perf--heads', formatteropts)
+@command(b'perf::heads|perfheads', formatteropts)
 def perfheads(ui, repo, **opts):
     """benchmark the computation of a changelog heads"""
     opts = _byteskwargs(opts)
@@ -855,7 +855,7 @@
 
 
 @command(
-    b'perf--tags',
+    b'perf::tags|perftags',
     formatteropts
     + [
         (b'', b'clear-revlogs', False, b'refresh changelog and manifest'),
@@ -880,7 +880,7 @@
     fm.end()
 
 
-@command(b'perf--ancestors', formatteropts)
+@command(b'perf::ancestors|perfancestors', formatteropts)
 def perfancestors(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -894,7 +894,7 @@
     fm.end()
 
 
-@command(b'perf--ancestorset', formatteropts)
+@command(b'perf::ancestorset|perfancestorset', formatteropts)
 def perfancestorset(ui, repo, revset, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -910,7 +910,7 @@
     fm.end()
 
 
-@command(b'perf--discovery', formatteropts, b'PATH')
+@command(b'perf::discovery|perfdiscovery', 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'perf--bookmarks',
+    b'perf::bookmarks|perfbookmarks',
     formatteropts
     + [
         (b'', b'clear-revlogs', False, b'refresh changelog and manifest'),
@@ -953,7 +953,7 @@
     fm.end()
 
 
-@command(b'perf--bundleread', formatteropts, b'BUNDLE')
+@command(b'perf::bundleread|perfbundleread', formatteropts, b'BUNDLE')
 def perfbundleread(ui, repo, bundlepath, **opts):
     """Benchmark reading of bundle files.
 
@@ -1080,7 +1080,7 @@
 
 
 @command(
-    b'perf--changegroupchangelog',
+    b'perf::changegroupchangelog|perfchangegroupchangelog',
     formatteropts
     + [
         (b'', b'cgversion', b'02', b'changegroup version'),
@@ -1116,7 +1116,7 @@
     fm.end()
 
 
-@command(b'perf--dirs', formatteropts)
+@command(b'perf::dirs|perfdirs', formatteropts)
 def perfdirs(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1132,7 +1132,7 @@
 
 
 @command(
-    b'perf--dirstate',
+    b'perf::dirstate|perfdirstate',
     [
         (
             b'',
@@ -1195,7 +1195,7 @@
     fm.end()
 
 
-@command(b'perf--dirstatedirs', formatteropts)
+@command(b'perf::dirstatedirs|perfdirstatedirs', 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'perf--dirstatefoldmap', formatteropts)
+@command(b'perf::dirstatefoldmap|perfdirstatefoldmap', formatteropts)
 def perfdirstatefoldmap(ui, repo, **opts):
     """benchmap a `dirstate._map.filefoldmap.get()` request
 
@@ -1233,7 +1233,7 @@
     fm.end()
 
 
-@command(b'perf--dirfoldmap', formatteropts)
+@command(b'perf::dirfoldmap|perfdirfoldmap', formatteropts)
 def perfdirfoldmap(ui, repo, **opts):
     """benchmap a `dirstate._map.dirfoldmap.get()` request
 
@@ -1255,7 +1255,7 @@
     fm.end()
 
 
-@command(b'perf--dirstatewrite', formatteropts)
+@command(b'perf::dirstatewrite|perfdirstatewrite', 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'perf--mergecalculate',
+    b'perf::mergecalculate|perfmergecalculate',
     [
         (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'perf--mergecopies',
+    b'perf::mergecopies|perfmergecopies',
     [
         (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'perf--pathcopies', [], b"REV REV")
+@command(b'perf::pathcopies|perfpathcopies', [], b"REV REV")
 def perfpathcopies(ui, repo, rev1, rev2, **opts):
     """benchmark the copy tracing logic"""
     opts = _byteskwargs(opts)
@@ -1369,7 +1369,7 @@
 
 
 @command(
-    b'perf--phases',
+    b'perf::phases|perfphases',
     [
         (b'', b'full', False, b'include file reading time too'),
     ],
@@ -1394,7 +1394,7 @@
     fm.end()
 
 
-@command(b'perf--phasesremote', [], b"[DEST]")
+@command(b'perf::phasesremote|perfphasesremote', [], 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'perf--manifest',
+    b'perf::manifest|perfmanifest',
     [
         (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'perf--changeset', formatteropts)
+@command(b'perf::changeset|perfchangeset', formatteropts)
 def perfchangeset(ui, repo, rev, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1513,7 +1513,7 @@
     fm.end()
 
 
-@command(b'perf--ignore', formatteropts)
+@command(b'perf::ignore|perfignore', formatteropts)
 def perfignore(ui, repo, **opts):
     """benchmark operation related to computing ignore"""
     opts = _byteskwargs(opts)
@@ -1532,7 +1532,7 @@
 
 
 @command(
-    b'perf--index',
+    b'perf::index|perfindex',
     [
         (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'perf--nodemap',
+    b'perf::nodemap|perfnodemap',
     [
         (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'perf--startup', formatteropts)
+@command(b'perf::startup|perfstartup', formatteropts)
 def perfstartup(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1685,7 +1685,7 @@
     fm.end()
 
 
-@command(b'perf--parents', formatteropts)
+@command(b'perf::parents|perfparents', formatteropts)
 def perfparents(ui, repo, **opts):
     """benchmark the time necessary to fetch one changeset's parents.
 
@@ -1712,7 +1712,7 @@
     fm.end()
 
 
-@command(b'perf--ctxfiles', formatteropts)
+@command(b'perf::ctxfiles|perfctxfiles', formatteropts)
 def perfctxfiles(ui, repo, x, **opts):
     opts = _byteskwargs(opts)
     x = int(x)
@@ -1725,7 +1725,7 @@
     fm.end()
 
 
-@command(b'perf--rawfiles', formatteropts)
+@command(b'perf::rawfiles|perfrawfiles', formatteropts)
 def perfrawfiles(ui, repo, x, **opts):
     opts = _byteskwargs(opts)
     x = int(x)
@@ -1739,7 +1739,7 @@
     fm.end()
 
 
-@command(b'perf--lookup', formatteropts)
+@command(b'perf::lookup|perflookup', formatteropts)
 def perflookup(ui, repo, rev, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1748,7 +1748,7 @@
 
 
 @command(
-    b'perf--linelogedits',
+    b'perf::linelogedits|perflinelogedits',
     [
         (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'perf--revrange', formatteropts)
+@command(b'perf::revrange|perfrevrange', formatteropts)
 def perfrevrange(ui, repo, *specs, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1795,7 +1795,7 @@
     fm.end()
 
 
-@command(b'perf--nodelookup', formatteropts)
+@command(b'perf::nodelookup|perfnodelookup', formatteropts)
 def perfnodelookup(ui, repo, rev, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -1814,7 +1814,7 @@
 
 
 @command(
-    b'perf--log',
+    b'perf::log|perflog',
     [(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'perf--moonwalk', formatteropts)
+@command(b'perf::moonwalk|perfmoonwalk', formatteropts)
 def perfmoonwalk(ui, repo, **opts):
     """benchmark walking the changelog backwards
 
@@ -1851,7 +1851,7 @@
 
 
 @command(
-    b'perf--templating',
+    b'perf::templating|perftemplating',
     [
         (b'r', b'rev', [], b'revisions to run the template on'),
     ]
@@ -1941,7 +1941,7 @@
 
 
 @command(
-    b'perf--helper-mergecopies',
+    b'perf::helper-mergecopies|perfhelper-mergecopies',
     formatteropts
     + [
         (b'r', b'revs', [], b'restrict search to these revisions'),
@@ -2124,7 +2124,7 @@
 
 
 @command(
-    b'perf--helper-pathcopies',
+    b'perf::helper-pathcopies|perfhelper-pathcopies',
     formatteropts
     + [
         (b'r', b'revs', [], b'restrict search to these revisions'),
@@ -2263,7 +2263,7 @@
         _displaystats(ui, opts, entries, alldata)
 
 
-@command(b'perf--cca', formatteropts)
+@command(b'perf::cca|perfcca', formatteropts)
 def perfcca(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2271,7 +2271,7 @@
     fm.end()
 
 
-@command(b'perf--fncacheload', formatteropts)
+@command(b'perf::fncacheload|perffncacheload', formatteropts)
 def perffncacheload(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2284,7 +2284,7 @@
     fm.end()
 
 
-@command(b'perf--fncachewrite', formatteropts)
+@command(b'perf::fncachewrite|perffncachewrite', formatteropts)
 def perffncachewrite(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2304,7 +2304,7 @@
     fm.end()
 
 
-@command(b'perf--fncacheencode', formatteropts)
+@command(b'perf::fncacheencode|perffncacheencode', formatteropts)
 def perffncacheencode(ui, repo, **opts):
     opts = _byteskwargs(opts)
     timer, fm = gettimer(ui, opts)
@@ -2348,7 +2348,7 @@
 
 
 @command(
-    b'perf--bdiff',
+    b'perf::bdiff|perfbdiff',
     revlogopts
     + formatteropts
     + [
@@ -2464,7 +2464,7 @@
 
 
 @command(
-    b'perf--unidiff',
+    b'perf::unidiff|perfunidiff',
     revlogopts
     + formatteropts
     + [
@@ -2543,7 +2543,7 @@
     fm.end()
 
 
-@command(b'perf--diffwd', formatteropts)
+@command(b'perf::diffwd|perfdiffwd', formatteropts)
 def perfdiffwd(ui, repo, **opts):
     """Profile diff of working directory changes"""
     opts = _byteskwargs(opts)
@@ -2568,7 +2568,11 @@
     fm.end()
 
 
-@command(b'perf--revlogindex', revlogopts + formatteropts, b'-c|-m|FILE')
+@command(
+    b'perf::revlogindex|perfrevlogindex',
+    revlogopts + formatteropts,
+    b'-c|-m|FILE',
+)
 def perfrevlogindex(ui, repo, file_=None, **opts):
     """Benchmark operations against a revlog index.
 
@@ -2704,7 +2708,7 @@
 
 
 @command(
-    b'perf--revlogrevisions',
+    b'perf::revlogrevisions|perfrevlogrevisions',
     revlogopts
     + formatteropts
     + [
@@ -2754,7 +2758,7 @@
 
 
 @command(
-    b'perf--revlogwrite',
+    b'perf::revlogwrite|perfrevlogwrite',
     revlogopts
     + formatteropts
     + [
@@ -3047,7 +3051,7 @@
 
 
 @command(
-    b'perf--revlogchunks',
+    b'perf::revlogchunks|perfrevlogchunks',
     revlogopts
     + formatteropts
     + [
@@ -3176,7 +3180,7 @@
 
 
 @command(
-    b'perf--revlogrevision',
+    b'perf::revlogrevision|perfrevlogrevision',
     revlogopts
     + formatteropts
     + [(b'', b'cache', False, b'use caches instead of clearing')],
@@ -3319,7 +3323,7 @@
 
 
 @command(
-    b'perf--revset',
+    b'perf::revset|perfrevset',
     [
         (b'C', b'clear', False, b'clear volatile cache between each call.'),
         (b'', b'contexts', False, b'obtain changectx for each revision'),
@@ -3352,7 +3356,7 @@
 
 
 @command(
-    b'perf--volatilesets',
+    b'perf::volatilesets|perfvolatilesets',
     [
         (b'', b'clear-obsstore', False, b'drop obsstore between each call.'),
     ]
@@ -3401,7 +3405,7 @@
 
 
 @command(
-    b'perf--branchmap',
+    b'perf::branchmap|perfbranchmap',
     [
         (b'f', b'full', False, b'Includes build time of subset'),
         (
@@ -3492,7 +3496,7 @@
 
 
 @command(
-    b'perf--branchmapupdate',
+    b'perf::branchmapupdate|perfbranchmapupdate',
     [
         (b'', b'base', [], b'subset of revision to start from'),
         (b'', b'target', [], b'subset of revision to end with'),
@@ -3602,7 +3606,7 @@
 
 
 @command(
-    b'perf--branchmapload',
+    b'perf::branchmapload|perfbranchmapload',
     [
         (b'f', b'filter', b'', b'Specify repoview filter'),
         (b'', b'list', False, b'List brachmap filter caches'),
@@ -3661,7 +3665,7 @@
     fm.end()
 
 
-@command(b'perf--loadmarkers')
+@command(b'perf::loadmarkers|perfloadmarkers')
 def perfloadmarkers(ui, repo):
     """benchmark the time to parse the on-disk markers for a repo
 
@@ -3673,7 +3677,7 @@
 
 
 @command(
-    b'perf--lrucachedict',
+    b'perf::lrucachedict|perflrucachedict',
     formatteropts
     + [
         (b'', b'costlimit', 0, b'maximum total cost of items in cache'),
@@ -3829,7 +3833,7 @@
 
 
 @command(
-    b'perf--write',
+    b'perf::write|perfwrite',
     formatteropts
     + [
         (b'', b'write-method', b'write', b'ui write method'),
@@ -3892,7 +3896,7 @@
 
 
 @command(
-    b'perf--progress',
+    b'perf::progress|perfprogress',
     formatteropts
     + [
         (b'', b'topic', b'topic', b'topic for progress messages'),

--- a/tests/test-contrib-perf.t	Mon Jan 25 23:13:01 2021 +0100
+++ b/tests/test-contrib-perf.t	Mon Jan 25 16:46:51 2021 +0100
@@ -78,126 +78,126 @@
   
   list of commands:
   
-   perf--addremove
+   perf::addremove
                  (no help text available)
-   perf--ancestors
+   perf::ancestors
                  (no help text available)
-   perf--ancestorset
+   perf::ancestorset
                  (no help text available)
-   perf--annotate
+   perf::annotate
                  (no help text available)
-   perf--bdiff   benchmark a bdiff between revisions
-   perf--bookmarks
+   perf::bdiff   benchmark a bdiff between revisions
+   perf::bookmarks
                  benchmark parsing bookmarks from disk to memory
-   perf--branchmap
+   perf::branchmap
                  benchmark the update of a branchmap
-   perf--branchmapload
+   perf::branchmapload
                  benchmark reading the branchmap
-   perf--branchmapupdate
+   perf::branchmapupdate
                  benchmark branchmap update from for <base> revs to <target>
                  revs
-   perf--bundleread
+   perf::bundleread
                  Benchmark reading of bundle files.
-   perf--cca     (no help text available)
-   perf--changegroupchangelog
+   perf::cca     (no help text available)
+   perf::changegroupchangelog
                  Benchmark producing a changelog group for a changegroup.
-   perf--changeset
+   perf::changeset
                  (no help text available)
-   perf--ctxfiles
+   perf::ctxfiles
                  (no help text available)
-   perf--diffwd  Profile diff of working directory changes
-   perf--dirfoldmap
+   perf::diffwd  Profile diff of working directory changes
+   perf::dirfoldmap
                  benchmap a 'dirstate._map.dirfoldmap.get()' request
-   perf--dirs    (no help text available)
-   perf--dirstate
+   perf::dirs    (no help text available)
+   perf::dirstate
                  benchmap the time of various distate operations
-   perf--dirstatedirs
+   perf::dirstatedirs
                  benchmap a 'dirstate.hasdir' call from an empty 'dirs' cache
-   perf--dirstatefoldmap
+   perf::dirstatefoldmap
                  benchmap a 'dirstate._map.filefoldmap.get()' request
-   perf--dirstatewrite
+   perf::dirstatewrite
                  benchmap the time it take to write a dirstate on disk
-   perf--discovery
+   perf::discovery
                  benchmark discovery between local repo and the peer at given
                  path
-   perf--fncacheencode
+   perf::fncacheencode
                  (no help text available)
-   perf--fncacheload
+   perf::fncacheload
                  (no help text available)
-   perf--fncachewrite
+   perf::fncachewrite
                  (no help text available)
-   perf--heads   benchmark the computation of a changelog heads
-   perf--helper-mergecopies
+   perf::heads   benchmark the computation of a changelog heads
+   perf::helper-mergecopies
                  find statistics about potential parameters for
                  'perfmergecopies'
-   perf--helper-pathcopies
+   perf::helper-pathcopies
                  find statistic about potential parameters for the
                  'perftracecopies'
-   perf--ignore  benchmark operation related to computing ignore
-   perf--index   benchmark index creation time followed by a lookup
-   perf--linelogedits
+   perf::ignore  benchmark operation related to computing ignore
+   perf::index   benchmark index creation time followed by a lookup
+   perf::linelogedits
                  (no help text available)
-   perf--loadmarkers
+   perf::loadmarkers
                  benchmark the time to parse the on-disk markers for a repo
-   perf--log     (no help text available)
-   perf--lookup  (no help text available)
-   perf--lrucachedict
+   perf::log     (no help text available)
+   perf::lookup  (no help text available)
+   perf::lrucachedict
                  (no help text available)
-   perf--manifest
+   perf::manifest
                  benchmark the time to read a manifest from disk and return a
                  usable
-   perf--mergecalculate
+   perf::mergecalculate
                  (no help text available)
-   perf--mergecopies
+   perf::mergecopies
                  measure runtime of 'copies.mergecopies'
-   perf--moonwalk
+   perf::moonwalk
                  benchmark walking the changelog backwards
-   perf--nodelookup
+   perf::nodelookup
                  (no help text available)
-   perf--nodemap
+   perf::nodemap
                  benchmark the time necessary to look up revision from a cold
                  nodemap
-   perf--parents
+   perf::parents
                  benchmark the time necessary to fetch one changeset's parents.
-   perf--pathcopies
+   perf::pathcopies
                  benchmark the copy tracing logic
-   perf--phases  benchmark phasesets computation
-   perf--phasesremote
+   perf::phases  benchmark phasesets computation
+   perf::phasesremote
                  benchmark time needed to analyse phases of the remote server
-   perf--progress
+   perf::progress
                  printing of progress bars
-   perf--rawfiles
+   perf::rawfiles
                  (no help text available)
-   perf--revlogchunks
+   perf::revlogchunks
                  Benchmark operations on revlog chunks.
-   perf--revlogindex
+   perf::revlogindex
                  Benchmark operations against a revlog index.
-   perf--revlogrevision
+   perf::revlogrevision
                  Benchmark obtaining a revlog revision.
-   perf--revlogrevisions
+   perf::revlogrevisions
                  Benchmark reading a series of revisions from a revlog.
-   perf--revlogwrite
+   perf::revlogwrite
                  Benchmark writing a series of revisions to a revlog.
-   perf--revrange
+   perf::revrange
                  (no help text available)
-   perf--revset  benchmark the execution time of a revset
-   perf--startup
+   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
+   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
-   perf--unidiff
+   perf::unidiff
                  benchmark a unified diff between revisions
-   perf--volatilesets
+   perf::volatilesets
                  benchmark the computation of various volatile set
-   perf--walk    (no help text available)
-   perf--write   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 help perfaddremove
-  hg perf--addremove
+  hg perf::addremove
   
   aliases: perfaddremove