diff -r 4eec920bbb37 -r 0a81f3ef054c mercurial/rcutil.py
--- a/mercurial/rcutil.py	Thu Dec 05 18:07:55 2024 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,119 +0,0 @@
-# rcutil.py - utilities about config paths, special config sections etc.
-#
-#  Copyright Mercurial Contributors
-#
-# This software may be used and distributed according to the terms of the
-# GNU General Public License version 2 or any later version.
-
-from __future__ import annotations
-
-import os
-
-from . import (
-    encoding,
-    pycompat,
-    util,
-)
-
-from .utils import resourceutil
-
-if pycompat.iswindows:
-    from . import scmwindows as scmplatform
-else:
-    from . import scmposix as scmplatform
-
-fallbackpager = scmplatform.fallbackpager
-systemrcpath = scmplatform.systemrcpath
-userrcpath = scmplatform.userrcpath
-
-
-def _expandrcpath(path):
-    '''path could be a file or a directory. return a list of file paths'''
-    p = util.expandpath(path)
-    if os.path.isdir(p):
-        join = os.path.join
-        return sorted(
-            join(p, f) for f, k in util.listdir(p) if f.endswith(b'.rc')
-        )
-    return [p]
-
-
-def envrcitems(env=None):
-    """Return [(section, name, value, source)] config items.
-
-    The config items are extracted from environment variables specified by env,
-    used to override systemrc, but not userrc.
-
-    If env is not provided, encoding.environ will be used.
-    """
-    if env is None:
-        env = encoding.environ
-    checklist = [
-        (b'EDITOR', b'ui', b'editor'),
-        (b'VISUAL', b'ui', b'editor'),
-        (b'PAGER', b'pager', b'pager'),
-    ]
-    result = []
-    for envname, section, configname in checklist:
-        if envname not in env:
-            continue
-        result.append((section, configname, env[envname], b'$%s' % envname))
-    return result
-
-
-def default_rc_resources():
-    """return rc resource IDs in defaultrc"""
-    rsrcs = resourceutil.contents(b'mercurial.defaultrc')
-    return [
-        (b'mercurial.defaultrc', r)
-        for r in sorted(rsrcs)
-        if resourceutil.is_resource(b'mercurial.defaultrc', r)
-        and r.endswith(b'.rc')
-    ]
-
-
-def rccomponents():
-    """return an ordered [(type, obj)] about where to load configs.
-
-    respect $HGRCPATH. if $HGRCPATH is empty, only .hg/hgrc of current repo is
-    used. if $HGRCPATH is not set, the platform default will be used.
-
-    if a directory is provided, *.rc files under it will be used.
-
-    type could be either 'path', 'items' or 'resource'. If type is 'path',
-    obj is a string, and is the config file path. if type is 'items', obj is a
-    list of (section, name, value, source) that should fill the config directly.
-    If type is 'resource', obj is a tuple of (package name, resource name).
-    """
-    envrc = (b'items', envrcitems())
-
-    if b'HGRCPATH' in encoding.environ:
-        # assume HGRCPATH is all about user configs so environments can be
-        # overridden.
-        _rccomponents = [envrc]
-        for p in encoding.environ[b'HGRCPATH'].split(pycompat.ospathsep):
-            if not p:
-                continue
-            _rccomponents.extend((b'path', p) for p in _expandrcpath(p))
-    else:
-        _rccomponents = [(b'resource', r) for r in default_rc_resources()]
-
-        normpaths = lambda paths: [
-            (b'path', os.path.normpath(p)) for p in paths
-        ]
-        _rccomponents.extend(normpaths(systemrcpath()))
-        _rccomponents.append(envrc)
-        _rccomponents.extend(normpaths(userrcpath()))
-    return _rccomponents
-
-
-def defaultpagerenv():
-    """return a dict of default environment variables and their values,
-    intended to be set before starting a pager.
-    """
-    return {b'LESS': b'FRX', b'LV': b'-c'}
-
-
-def use_repo_hgrc():
-    """True if repositories `.hg/hgrc` config should be read"""
-    return b'HGRCSKIPREPO' not in encoding.environ