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'