# Buggy code
def render_tmpl(
    tmplsrc, from_str=False, to_str=False, context=None, tmplpath=None, **kws
):
    if context is None:
        context = {}

    # Alias cmd.run to cmd.shell to make python_shell=True the default for
    # templated calls
    if "salt" in kws:
        kws["salt"] = AliasedLoader(kws["salt"])

    # We want explicit context to overwrite the **kws
    kws.update(context)
    context = kws
    assert "opts" in context
    assert "saltenv" in context

    if "sls" in context:
        slspath = context["sls"].replace(".", "/")
        if tmplpath is not None:
            context["tplpath"] = tmplpath
            if not tmplpath.lower().replace("\\", "/").endswith("/init.sls"):
                slspath = os.path.dirname(slspath)
            template = tmplpath.replace("\\", "/")
            i = template.rfind(slspath.replace(".", "/"))
            if i != -1:
                template = template[i:]
            tpldir = os.path.dirname(template).replace("\\", "/")
            tpldata = {
                "tplfile": template,
                "tpldir": "." if tpldir == "" else tpldir,
                "tpldot": tpldir.replace("/", "."),
            }
            context.update(tpldata)
        context["slsdotpath"] = slspath.replace("/", ".")
        context["slscolonpath"] = slspath.replace("/", ":")
        context["sls_path"] = slspath.replace("/", "_")
        context["slspath"] = slspath

    if isinstance(tmplsrc, six.string_types):
        if from_str:
            tmplstr = tmplsrc
        else:
            try:
                if tmplpath is not None:
                    tmplsrc = os.path.join(tmplpath, tmplsrc)
                with codecs.open(tmplsrc, "r", SLS_ENCODING) as _tmplsrc:
                    tmplstr = _tmplsrc.read()
            except (UnicodeDecodeError, ValueError, OSError, IOError) as exc:
                if salt.utils.files.is_binary(tmplsrc):
                    # Template is a bin file, return the raw file
                    return dict(result=True, data=tmplsrc)
                log.error(
                    "Exception occurred while reading file %s: %s",
                    tmplsrc,
                    exc,
                    exc_info_on_loglevel=logging.DEBUG,
                )
                raise exc
    else:  # assume tmplsrc is file-like.
        tmplstr = tmplsrc.read()
        tmplsrc.close()
    try:
        output = render_str(tmplstr, context, tmplpath)
        if six.PY2:
            output = output.encode(SLS_ENCODING)
        if salt.utils.platform.is_windows():
            newline = False
            if salt.utils.stringutils.to_unicode(output).endswith(("\n", os.linesep)):
                newline = True
            # Write out with Windows newlines
            output = os.linesep.join(output.splitlines())
            if newline:
                output += os.linesep

    except SaltRenderError as exc:
        log.exception("Rendering exception occurred")
        # return dict(result=False, data=six.text_type(exc))
        raise
    except Exception:
        return dict(result=False, data=traceback.format_exc())
    else:
        if to_str:  # then render as string
            return dict(result=True, data=output)
        with tempfile.NamedTemporaryFile(
            "wb", delete=False, prefix=salt.utils.files.TEMPFILE_PREFIX
        ) as outf:
            if six.PY3:
                output = output.encode(SLS_ENCODING)
            outf.write(output)
            # Note: If nothing is replaced or added by the rendering
            #       function, then the contents of the output file will
            #       be exactly the same as the input.
        return dict(result=True, data=outf.name)


# Traceback (UnicodeEncodeError)
The minion function caused an exception: Traceback (most recent call last):
File "c:\salt\bin\lib\site-packages\salt\minion.py", line 1624, in _thread_return
return_data = minion_instance.executors[fname](opts, data, func, args, kwargs)
File "c:\salt\bin\lib\site-packages\salt\executors\direct_call.py", line 12, in execute
return func(*args, **kwargs)
File "c:\salt\bin\lib\site-packages\salt\modules\win_pkg.py", line 1142, in install
old = list_pkgs(saltenv=saltenv, refresh=refresh, versions_as_list=True)
File "c:\salt\bin\lib\site-packages\salt\modules\win_pkg.py", line 400, in list_pkgs
name_map = _get_name_map(saltenv)
File "c:\salt\bin\lib\site-packages\salt\modules\win_pkg.py", line 1846, in _get_name_map
u_name_map[k.decode('utf-8')] = name_map[k]
File "c:\salt\bin\lib\encodings\utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 5-11: ordinal not in range(128)

# Fixed code
def render_tmpl(
    tmplsrc, from_str=False, to_str=False, context=None, tmplpath=None, **kws
):
    if context is None:
        context = {}

    # Alias cmd.run to cmd.shell to make python_shell=True the default for
    # templated calls
    if "salt" in kws:
        kws["salt"] = AliasedLoader(kws["salt"])

    # We want explicit context to overwrite the **kws
    kws.update(context)
    context = kws
    assert "opts" in context
    assert "saltenv" in context

    if "sls" in context:
        slspath = context["sls"].replace(".", "/")
        if tmplpath is not None:
            context["tplpath"] = tmplpath
            if not tmplpath.lower().replace("\\", "/").endswith("/init.sls"):
                slspath = os.path.dirname(slspath)
            template = tmplpath.replace("\\", "/")
            i = template.rfind(slspath.replace(".", "/"))
            if i != -1:
                template = template[i:]
            tpldir = os.path.dirname(template).replace("\\", "/")
            tpldata = {
                "tplfile": template,
                "tpldir": "." if tpldir == "" else tpldir,
                "tpldot": tpldir.replace("/", "."),
            }
            context.update(tpldata)
        context["slsdotpath"] = slspath.replace("/", ".")
        context["slscolonpath"] = slspath.replace("/", ":")
        context["sls_path"] = slspath.replace("/", "_")
        context["slspath"] = slspath

    if isinstance(tmplsrc, six.string_types):
        if from_str:
            tmplstr = tmplsrc
        else:
            try:
                if tmplpath is not None:
                    tmplsrc = os.path.join(tmplpath, tmplsrc)
                with codecs.open(tmplsrc, "r", SLS_ENCODING) as _tmplsrc:
                    tmplstr = _tmplsrc.read()
            except (UnicodeDecodeError, ValueError, OSError, IOError) as exc:
                if salt.utils.files.is_binary(tmplsrc):
                    # Template is a bin file, return the raw file
                    return dict(result=True, data=tmplsrc)
                log.error(
                    "Exception occurred while reading file %s: %s",
                    tmplsrc,
                    exc,
                    exc_info_on_loglevel=logging.DEBUG,
                )
                raise exc
    else:  # assume tmplsrc is file-like.
        tmplstr = tmplsrc.read()
        tmplsrc.close()
    try:
        output = render_str(tmplstr, context, tmplpath)
        if salt.utils.platform.is_windows():
            newline = False
            if salt.utils.stringutils.to_unicode(
                output, encoding=SLS_ENCODING
            ).endswith(("\n", os.linesep)):
                newline = True
            # Write out with Windows newlines
            output = os.linesep.join(output.splitlines())
            if newline:
                output += os.linesep

    except SaltRenderError as exc:
        log.exception("Rendering exception occurred")
        # return dict(result=False, data=six.text_type(exc))
        raise
    except Exception:
        return dict(result=False, data=traceback.format_exc())
    else:
        if to_str:  # then render as string
            return dict(result=True, data=output)
        with tempfile.NamedTemporaryFile(
            "wb", delete=False, prefix=salt.utils.files.TEMPFILE_PREFIX
        ) as outf:
            outf.write(salt.utils.stringutils.to_bytes(output, encoding=SLS_ENCODING))
            # Note: If nothing is replaced or added by the rendering
            #       function, then the contents of the output file will
            #       be exactly the same as the input.
        return dict(result=True, data=outf.name)