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Author SHA1 Message Date
Jun Wu
ac7e07dbdf commands: define prefixes as aliases 
Summary:
At a recent team meeting we've decided to remove the command prefix matching
behavior, as it can be really annoying for the Rust parser (since it needs to
know all the names, but it wants to avoid spinning up Python). It's even more
annoying for subcommand support. FWIW git does not have prefix matching.

This diff adds various aliases to "roughly" keep the command prefix matching
behavior.

The list of aliases are obtained by this script in `hg dbsh`:

  def unique(prefix, names):
    m = __import__('edenscm.mercurial').mercurial
    try:
      return m.cmdutil.findcmd(prefix, m.commands.table, False)[0][0] in names
    except:
      return False

  nameslist=sorted([i.replace('^','') for i in m.commands.table])
  aliases = {}

  for names in nameslist:
    names = names.split('|')
    for name in names:
      if name.startswith('debug'):
        continue
      for prefix in [name[:i] for i in xrange(1, len(name))]:
        if unique(prefix, names):
          aliases.setdefault(name, []).append(prefix)

Debug commands, and commands that are rarely used are not changed, including:

  'backfillmanifestrevlog': ['backfillm', 'backfillma', 'backfillman', 'backfillmani', 'backfillmanif', 'backfillmanife', 'backfillmanifes', 'backfillmanifest', 'backfillmanifestr', 'backfillmanifestre', 'backfillmanifestrev', 'backfillmanifestrevl', 'backfillmanifestrevlo'],
  'backfilltree': ['backfillt', 'backfilltr', 'backfilltre']}
  'blackbox': ['blac', 'black', 'blackb', 'blackbo'],
  'cachemanifest': ['cac', 'cach', 'cache', 'cachem', 'cachema', 'cacheman', 'cachemani', 'cachemanif', 'cachemanife', 'cachemanifes'],
  'chistedit': ['chi', 'chis', 'chist', 'chiste', 'chisted', 'chistedi'],
  'clone': ['clon'],
  'cloud': ['clou'],
  'convert': ['conv', 'conve', 'conver'],
  'copy': ['cop'],
  'fastannotate': ['fa', 'fas', 'fast', 'fasta', 'fastan', 'fastann', 'fastanno', 'fastannot', 'fastannota', 'fastannotat'],
  'fold': ['fol'],
  'githelp': ['gi', 'git', 'gith', 'githe', 'githel'],
  'histgrep': ['histg', 'histgr', 'histgre'],
  'incoming': ['in', 'inc', 'inco', 'incom', 'incomi', 'incomin'],
  'isbackedup': ['is', 'isb', 'isba', 'isbac', 'isback', 'isbacke', 'isbacked', 'isbackedu'],
  'manifest': ['ma', 'man', 'mani', 'manif', 'manife', 'manifes'],
  'outgoing': ['o', 'ou', 'out', 'outg', 'outgo', 'outgoi', 'outgoin'],
  'prefetch': ['pref', 'prefe', 'prefet', 'prefetc'],
  'prune': ['pru', 'prun'],
  'pushbackup': ['pushb', 'pushba', 'pushbac', 'pushback', 'pushbacku'],
  'rage': ['ra', 'rag'],
  'record': ['recor'],
  'recover': ['recov', 'recove'],
  'redo': ['red'],
  'repack': ['rep', 'repa', 'repac'],
  'reset': ['rese'],
  'rollback': ['rol', 'roll', 'rollb', 'rollba', 'rollbac'],
  'root': ['roo'],
  'serve': ['se', 'ser', 'serv'],
  'share': ['sha', 'shar'],
  'sparse': ['spa', 'spar', 'spars'],
  'svn': ['sv'],
  'undo': ['und'],
  'unshare': ['unsha', 'unshar'],
  'verifyremotefilelog': ['verifyr', 'verifyre', 'verifyrem', 'verifyremo', 'verifyremot', 'verifyremote', 'verifyremotef', 'verifyremotefi', 'verifyremotefil', 'verifyremotefile', 'verifyremotefilel', 'verifyremotefilelo'],

Reviewed By: sfilipco

Differential Revision: D17644676

fbshipit-source-id: f60f5e6810279b52f9a4a1e048eeb529a96bd735
 2019-10-08 09:45:59 -07:00
Jun Wu
9dc21f8d0b codemod: import from the edenscm package 
Summary:
D13853115 adds `edenscm/` to `sys.path` and code still uses `import mercurial`.
That has nasty problems if both `import mercurial` and
`import edenscm.mercurial` are used, because Python would think `mercurial.foo`
and `edenscm.mercurial.foo` are different modules so code like
`try: ... except mercurial.error.Foo: ...`, or `isinstance(x, mercurial.foo.Bar)`
would fail to handle the `edenscm.mercurial` version. There are also some
module-level states (ex. `extensions._extensions`) that would cause trouble if
they have multiple versions in a single process.

Change imports to use the `edenscm` so ideally the `mercurial` is no longer
imported at all. Add checks in extensions.py to catch unexpected extensions
importing modules from the old (wrong) locations when running tests.

Reviewed By: phillco

Differential Revision: D13868981

fbshipit-source-id: f4e2513766957fd81d85407994f7521a08e4de48
 2019-01-29 17:25:32 -08:00
Jun Wu
c12e300bb8 codemod: move Python packages to edenscm 
Summary:
Move top-level Python packages `mercurial`, `hgext` and `hgdemandimport` to
a new top-level package `edenscm`. This allows the Python packages provided by
the upstream Mercurial to be installed side-by-side.

To maintain compatibility, `edenscm/` gets added to `sys.path` in
`mercurial/__init__.py`.

Reviewed By: phillco, ikostia

Differential Revision: D13853115

fbshipit-source-id: b296b0673dc54c61ef6a591ebc687057ff53b22e
 2019-01-28 18:35:41 -08:00