CoCoA:Emacs interface

From CoCoAWiki
Revision as of 13:08, 19 October 2005 by Bigatti (talk | contribs) (slowly updating ("go to parse error line"))


The distribution of cocoa-4.5 includes an emacs/ directory which contains cocoa.el and cocoa.emacs (the settings to be added to your .emacs).

  • a friendly CoCoA menu
  • automatic indentation
  • coloured syntax (in font-lock-mode - default)
  • capitalization of keywords (in abbrev-mode - default)
  • automatic loading of wordlist.txt for dynamic abbrev expansion (M-/ or ESC / or TAB /)

CoCoA menu

CoCoA menu for cocoa-mode

From the menu you can

  • send lines, regions and files to cocoa
  • go to the parse error line (if you had a parse error after sending a file)
  • start or restart the CoCoAServer

Some key bindings in cocoa-mode

  • C-c C-e (like in latex-mode) writes the appropriate "End" (EndIf,...)
  • C-c C-c (like in c-mode) comment-region

If the following features do not work you should customize the variable cocoa-executable in cocoa.emacs:

Calling CoCoA

From a buffer in cocoa-mode you can select things and "send" them to a cocoa buffer (called *cocoa*) to be evaluated:

C-c C-l 
execute this line (from any point in the line)
C-c C-r 
execute the selected region
C-c C-f 
execute all this file (from any point in thefile)
C-c C-p 
go to the parse error line (if C-c C-f gave a parse error)
C-c C-m or C-c ? 
call the CoCoA manual for this word (from any point in the word)

They will automatically start CoCoA (if it isn't already running in a *cocoa* buffer).

M-x cocoa 
opens a buffer (called *cocoa*) with a running CoCoA