Error detected while writing codes like "(10**7)." in Ruby

[cheuk-fung]

Example:

    (10**7).

Open a new ruby source file and type the example line. After types the ".", vim gives:

Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
Traceback (most recent call last):
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
  File "<string>", line 1, in <module>
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
  File "/home/cheuk-fung/.vim/bundle/YouCompleteMe/autoload/../python/ycm/completers/all/omni_completer.py", line 58, in CandidatesForQueryAsync
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
    query, unused_start_column )
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
  File "/home/cheuk-fung/.vim/bundle/YouCompleteMe/autoload/../python/ycm/completers/completer.py", line 180, in CandidatesForQueryAsync
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
    self.CandidatesForQueryAsyncInner( query, start_column )
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
  File "/home/cheuk-fung/.vim/bundle/YouCompleteMe/autoload/../python/ycm/completers/all/omni_completer.py", line 79, in CandidatesForQueryAsyncInner
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
    items = vim.eval( ''.join( omnifunc_call ) )
Error detected while processing function youcompleteme#Complete..<SNR>79_CompletionsForQuery:
line    7:
vim.error: Vim(ruby):TypeError: no implicit conversion of nil into String
Error detected while processing function youcompleteme#Complete:
line   35:
E171: Missing :endif

My OS (both have this problem):

Linux Ng 3.10.6-2-ARCH #1 SMP PREEMPT Tue Aug 13 09:47:01 CEST 2013 x86_64 GNU/Linux

Linux Ng 3.8.0-27-generic #40-Ubuntu SMP Tue Jul 9 00:19:35 UTC 2013 i686 i686 i686 GNU/Linux

And here is the output of vim --version:

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Aug 13 2013 20:48:15)
Compiled by Arch Linux
Huge version with GTK2 GUI.  Features included (+) or not (-):
+arabic          +file_in_path    +mouse_sgr       +tag_binary
+autocmd         +find_in_path    -mouse_sysmouse  +tag_old_static
+balloon_eval    +float           +mouse_urxvt     -tag_any_white
+browse          +folding         +mouse_xterm     -tcl
++builtin_terms  -footer          +multi_byte      +terminfo
+byte_offset     +fork()          +multi_lang      +termresponse
+cindent         +gettext         -mzscheme        +textobjects
+clientserver    -hangul_input    +netbeans_intg   +title
+clipboard       +iconv           +path_extra      +toolbar
+cmdline_compl   +insert_expand   +perl            +user_commands
+cmdline_hist    +jumplist        +persistent_undo +vertsplit
+cmdline_info    +keymap          +postscript      +virtualedit
+comments        +langmap         +printer         +visual
+conceal         +libcall         +profile         +visualextra
+cryptv          +linebreak       +python          +viminfo
+cscope          +lispindent      -python3         +vreplace
+cursorbind      +listcmds        +quickfix        +wildignore
+cursorshape     +localmap        +reltime         +wildmenu
+dialog_con_gui  +lua             +rightleft       +windows
+diff            +menu            +ruby            +writebackup
+digraphs        +mksession       +scrollbind      +X11
+dnd             +modify_fname    +signs           -xfontset
-ebcdic          +mouse           +smartindent     +xim
+emacs_tags      +mouseshape      -sniff           +xsmp_interact
+eval            +mouse_dec       +startuptime     +xterm_clipboard
+ex_extra        +mouse_gpm       +statusline      -xterm_save
+extra_search    -mouse_jsbterm   -sun_workshop    
+farsi           +mouse_netterm   +syntax          
   system vimrc file: "/etc/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "/etc/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
2nd user gvimrc file: "~/.vim/gvimrc"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/usr/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK  -pthread -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libdrm -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2  -D_FORTIFY_SOURCE=2 -I/usr/local/include  -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1      
Linking: gcc   -L. -Wl,-O1,--sort-common,--as-needed,-z,relro -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,-E -Wl,-rpath,/usr/lib/perl5/core_perl/CORE  -Wl,-O1,--sort-common,--as-needed,-z,relro -L/usr/local/lib -Wl,--as-needed -o vim   -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lfreetype -lfontconfig  -lSM -lICE -lXt -lX11 -lXdmcp -lSM -lICE  -lm -lncurses -lnsl   -lacl -lattr -lgpm -ldl  -L/usr/lib -llua -Wl,-E -Wl,-rpath,/usr/lib/perl5/core_perl/CORE -Wl,-O1,--sort-common,--as-needed,-z,relro -fstack-protector -L/usr/local/lib  -L/usr/lib/perl5/core_perl/CORE -lperl -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc -L/usr/lib/python2.7/config -lpython2.7 -lpthread -ldl -lutil -lm -Xlinker -export-dynamic   -lruby -lpthread -lrt -ldl -lcrypt -lm  -L/usr/lib   

I tried some more cases. It seems that this problem only occurred in the case that typing a "." after a parentheses containing the operator "**".

[vheon]

I tried but for me the errors are all related to vim-ruby auto-complete function.

[cheuk-fung]

@vheon I disabled vim-ruby and vim-rails but it doesn't help..

[vheon]

well vim-ruby is part of the vim runtime

[cheuk-fung]

Oh, I see..

I disabled YCM and tried again with typing <ctrl+X><ctrl+O> right after "." and then vim detected error (got different output though). Seems that the problem is related to vim-ruby indeed.

I reported this issue to vim-ruby here: vim-ruby/vim-ruby#169

[Valloric]

Closing as this seems to be a vim-ruby issue.