The fontconfig.properties.src file ships in each JRE and represents the src file used to compile the equivalent binary format fontconfig file (fontconfig.properties.bfc)

Some people might mistakenly edit the fontconfig.properties.src file and expect the JRE to pick up the changes. The changes will not be picked up unless the file is copied or renamed to fontconfig.properties

We should make this clear via comment in the fontconfig.properties.src file.

Something like :

# This file represents the source used to generate the fontconfig.properties.bfc file.
# If edits made in this file are to be picked up by the JRE, then the file must be renamed to fontconfig.properties
# See the fontconfig documentation for more information.