I found in AUR a PKGBUILD with DOS line endings. See what happens: $ makepkg : command not found ==> ERROR: An unknown error has occured. Exiting... makepkg simply sources "$BUILDSCRIPT" and bash treats '\r' literally. The PKGBUILD maintainer is surely to be blamed and I don't think that `makepkg' should try to catch this error (sorry for some innocent user). Just wanted to expose this "feature". bye
