StringTemplateStyle ($) does not support unbraced names

[nhairs]

Original Issue: madzak/python-json-logger#194

Fix regex for string template style

valid String template: '$asctime $level $message'

regex for string template in JsonFormatter.parse:

....
        elif isinstance(self._style, logging.StrFormatStyle):
            formatter_style_pattern = re.compile(r"\{(.+?)\}", re.IGNORECASE)
...

would require the string template to be '${asctime} ${level} ${message}'

[nhairs]

Rereading this, I'm not entirely sure if this is referring to StrFormatStyle aka style="{" or StringTemplateStyle aka style="$".

I think it's referring to StringTemplateStyle as String Templates allow using $var and ${var} for substitutions (but not {var}).

However the snippet from the original issue is showing the line form StrFormatStyle. I'll note that as far as I can tell from the docs str.format does not use $ for it's variable marker.

@Thomasillo are you able to clarify which format you believe the issue with?