# Convert tabs to spaces and delete trailing whitespace in files
# which we can safely assume to be source files in appropriate languages.
+if ! expand -t 8 < $DEVNULL
+then
+ # If we're building with MSYS on Windows GNU expand is not available,
+ # and what we get is Microsoft Expand, which is something quite different,
+ # so bail out.
+ exit
+fi
+
tools-for-build/whitespacely-canonical-filenames \
| xargs tools-for-build/canonicalize-whitespace-1