Like so --
find . -name "*.c" -or -name "*.h" -exec indent -nbfda -npcs -npsl -bli0 --no-tabs {} \;
The `indent` invocation differs from the last one noted in
CHANGES.txt (from 2006!?), in that I've added "--no-tabs",
to ensure indents are all space-based.
Check output for "libpng warning:" lines; the tool also echos
its own "test-png warning" lines about other possible concerns
(e.g. strange bitdepths, etc.) which are not necessarily going
to cause Tux Paint to echo things to STDERR.
New tool, "test-png", which exercises libpng library on
a set of PNG image files, allowing us to find those which
cause Tux Paint (via SDL_image, in turn via libpng) to
report back warnings to STDERR.
h/t Tim Dickson, per https://sourceforge.net/p/tuxpaint/bugs/252/
