Python MapScript WxS Capabilities XML truncated

[tomkralidis]

cc @Schpidi

Hi: using 6.2.1 (Ubuntu) built from source along with the following
patch at
https://github.com/mapserver/mapserver/commit/937dcb6857501835b5489fa4bea321105412a20b.patch, we have a requirement to implement a WxS MapScript
approach for our OWS (we have up until now using the mapserv binary).

All works well, except for WMS GetCapabilities responses. The result is
a truncated WMS Capabilities XML which gets truncated when MapServer is
printing out the root Layer element.

I've posted a minimal mapfile and the Python mapscript at
https://gist.github.com/tomkralidis/f70afd49270cb8efb62f. Observations:

• commenting out LAYER.METADATA.wms_layer_group eliminates the issue,
  but we require this functionality
• commenting out LAYER.CLASSGROUP and LAYER.CLASS.GROUP, and
  uncommenting LAYER.METADATA.wms_layer_group eliminates the issue, but we
  require this functionality
• the same mapfile works just fine with mapserv binary

Any suggestions? I'm wondering whether the Python SWIG implementation
affects this and the fix at #4638

[Schpidi]

Could you maybe also post some test data? I'm having troubles to reproduce.

[tomkralidis]

Hi: this was an artifact of using Python mapscript which was not representative of the patch fix. Updating Python mapscript fixes this issue.

Thanks much to @Schpidi and @tbonfort