[Doxygen-users] FILTER_PATTERNS script worked in 1.8.7, fails in 1.8.8

[Andrew L. <dr...@me...>]

I've been working on improving the open source Google Protobuf filters for Doxygen. The filter converts the protobuf message to a C++ struct and writes that to stdout. This worked (well) in 1.8.7. After upgrading, none of the messages appear in the documentation. By writing filenames to stderr from the script, I also see that the #include statements in the original output (translated from protobuf import) are being ignored. However, the script is getting called on each file.

I don't believe the failure arises from more careful checking of the script output, which is not legal C code. (The buffers' "optional" and "required" qualifiers are left in, and are printed by Doxygen in a useful way.) I say this because if I run the script on the .proto file manually and redirect stdout to a cpp file, that file will be parsed with correct documentation produced.