Convert all TABs-as-indentation to spaces. Do it by running this command: [exempted files are matched via .x-sc_TAB_in_indentation] git ls-files \ | pcregrep -vf .x-sc_TAB_in_indentation \ | xargs pcregrep -l '^ *\t' \ | xargs perl -MText::Tabs -ni -le \ '$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'
Gettextize the source, make library strings translatable.