syn match erlangStringModifier /\~\%(-\?[0-9*]\+\)\?\%(\.[0-9*]\+\..\?\)\?\%(c\|f\|e\|g\|s\|w\|p\|W\|P\|B\|X\|#\|b\|+\|n\|i\)/ contained
syn match erlangModifier /\$\\\?./
syn match erlangInteger /\<\%([0-9]\+#[0-9a-fA-F]\+\|[0-9]\+\)\>/
syn match erlangFloat /\<[0-9]\+\.[0-9]\+\%(e-\?[0-9]\+\)\?\>/
syn keyword erlangTodo TODO FIXME XXX contained
syn match erlangComment /%.*$/ contains=@Spell,erlangTodo,erlangAnnotation
syn match erlangAnnotation /\%(%\s\)\@<=@\%(author\|clear\|copyright\|deprecated\|doc\|docfile\|end\|equiv\|headerfile\|hidden\|private\|reference\|see\|since\|spec\|throws\|title\|todo\|TODO\|type\|version\)/ contained
syn match erlangAnnotation /`[^']\+'/ contained
syn keyword erlangKeyword band bor bnot bsl bsr bxor div rem xor
syn keyword erlangKeyword try catch begin receive after cond fun let query
syn keyword erlangConditional case if of end
syn keyword erlangConditional not and or andalso orelse
syn match erlangOperator /=:=\|==\|\/=\|=\/=\|<\|>\|=<\|>=/
syn keyword erlangOperator div rem
syn region erlangString start=/"/ end=/"/ skip=/\\/ contains=@Spell,erlangStringModifier
syn match erlangVariable /\<[A-Z_]\w*\>/
syn match erlangAtom /\%(\%(^-\)\|#\)\@<!\<[a-z][A-Za-z0-9_]*\>\%(\s*[(:]\)\@!/
syn match erlangAtom /\\\@<!'[^']*\\\@<!'/
syn match erlangRecord /#\w\+/
syn match erlangTuple /{\|}/
syn match erlangList /\[\|\]/
syn match erlangAttribute /^-\%(vsn\|author\|copyright\|compile\|deprecated\|module\|export\|import\|behaviour\|behavior\|export_type\|ignore_xref\|on_load\)\s*(\@=/
syn match erlangInclude /^-include\%(_lib\)\?\s*(\@=/
syn match erlangRecordDef /^-record\s*(\@=/
syn match erlangDefine /^-\%(define\|undef\)\s*(\@=/
syn match erlangPreCondit /^-\%(ifdef\|ifndef\|else\|endif\)\%(\s*(\@=\)\?/
syn match erlangType /^-\%(spec\|type\)[( ]\@=/
syn match erlangMacro /\%(-define(\)\@<=\w\+/
syn match erlangMacro /?\??\w\+/
syn match erlangBitType /\%(\/\|-\)\@<=\%(bits\|bitstring\|binary\|integer\|float\|unit\)\>/
syn match erlangBitSize /:\@<=[0-9]\+/
syn match erlangBinary /<<\|>>/
" BIFs
syn match erlangBIF /\%([^:0-9A-Za-z_]\|\<erlang:\)\@<=\%(abs\|apply\|atom_to_binary\|atom_to_list\|binary_part\|binary_to_atom\|binary_to_existing_atom\|binary_to_list\|binary_to_term\|bit_size\|bitstring_to_list\|byte_size\|check_process_code\|date\|delete_module\|demonitor\|disconnect_node\|element\|erase\|exit\|float\|float_to_list\|garbage_collect\|get\|get_keys\|group_leader\|hd\|integer_to_list\|iolist_size\|iolist_to_binary\|is_alive\|is_atom\|is_binary\|is_bitstring\|is_boolean\|is_float\|is_function\|is_integer\|is_list\|is_number\|is_pid\|is_port\|is_process_alive\|is_record\|is_reference\|is_tuple\|length\|link\|list_to_atom\|list_to_binary\|list_to_bitstring\|list_to_existing_atom\|list_to_float\|list_to_integer\|list_to_pid\|list_to_tuple\|load_module\|make_ref\|max\|min\|module_loaded\|monitor\|monitor_node\|node\|nodes\|now\|open_port\|pid_to_list\|port_close\|port_command\|port_connect\|port_control\|pre_loaded\|processes\|process_flag\|process_info\|purge_module\|put\|register\|registered\|round\|self\|setelement\|size\|spawn\|spawn_link\|spawn_monitor\|spawn_opt\|split_binary\|statistics\|term_to_binary\|time\|tl\|trunc\|tuple_size\|tuple_to_list\|unlink\|unregister\|whereis\)\%((\|\/[0-9]\)\@=/
syn match erlangBIF /\<\%(erlang:\)\@<=\%(append_element\|bump_reductions\|cancel_timer\|decode_packet\|display\|function_exported\|fun_info\|fun_to_list\|get_cookie\|get_stacktrace\|hash\|is_builtin\|loaded\|load_nif\|localtime\|localtime_to_universaltime\|make_tuple\|memory\|monitor_node\|phash\|port_call\|port_info\|ports\|port_to_list\|process_display\|read_timer\|ref_to_list\|resume_process\|send\|send_after\|send_nosuspend\|set_cookie\|start_timer\|suspend_process\|system_flag\|system_info\|system_monitor\|system_profile\|trace\|trace_delivered\|trace_info\|trace_pattern\|universaltime\|universaltime_to_localtime\|yield\)(\@=/
