py3: avoid iterating over a literal bytes in highlight In Python 3, iterating over a bytes literal yields integers. Since we use the value in `text.replace()`, this fails on Python 3 with the following trackback: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/mercurial/hgweb/hgwebdir_mod.py", line 378, in run_wsgi for r in self._runwsgi(req, res): File "/usr/lib/python3/dist-packages/mercurial/hgweb/hgweb_mod.py", line 326, in run_wsgi for r in self._runwsgi(req, res, repo): File "/usr/lib/python3/dist-packages/mercurial/hgweb/hgweb_mod.py", line 449, in _runwsgi return getattr(webcommands, cmd)(rctx) File "/usr/lib/python3/dist-packages/mercurial/hgweb/webcommands.py", line 211, in file return _filerevision(web, webutil.filectx(web.repo, web.req)) File "/usr/lib/python3/dist-packages/hgext/highlight/__init__.py", line 72, in filerevision_highlight pygmentize(web, b'fileline', fctx, web.tmpl) File "/usr/lib/python3/dist-packages/hgext/highlight/__init__.py", line 58, in pygmentize field, fctx, style, tmpl, guessfilenameonly=filenameonly File "/usr/lib/python3/dist-packages/hgext/highlight/highlight.py", line 62, in pygmentize text = text.replace(c, b'') TypeError: a bytes-like object is required, not 'int'

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# Test the config layer generated by environment variables

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from __future__ import absolute_import, print_function

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import os

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from mercurial import (

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    encoding,

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    rcutil,

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    ui as uimod,

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    util,

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)

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from mercurial.utils import procutil

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testtmp = encoding.environ[b'TESTTMP']

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# prepare hgrc files

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def join(name):

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    return os.path.join(testtmp, name)

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with open(join(b'sysrc'), 'wb') as f:

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    f.write(b'[ui]\neditor=e0\n[pager]\npager=p0\n')

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with open(join(b'userrc'), 'wb') as f:

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    f.write(b'[ui]\neditor=e1')

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# replace rcpath functions so they point to the files above

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def systemrcpath():

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    return [join(b'sysrc')]

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def userrcpath():

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    return [join(b'userrc')]

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rcutil.systemrcpath = systemrcpath

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rcutil.userrcpath = userrcpath

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os.path.isdir = lambda x: False  # hack: do not load default.d/*.rc

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# utility to print configs

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def printconfigs(env):

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    encoding.environ = env

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    rcutil._rccomponents = None  # reset cache

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    ui = uimod.ui.load()

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    for section, name, value in ui.walkconfig():

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        source = ui.configsource(section, name)

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        procutil.stdout.write(

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            b'%s.%s=%s # %s\n' % (section, name, value, util.pconvert(source))

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        )

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    procutil.stdout.write(b'\n')

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# environment variable overrides

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printconfigs({})

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printconfigs({b'EDITOR': b'e2', b'PAGER': b'p2'})