<jsled> Rolf1: fwiw, if you just add a '_' in the glade definition for the item in the Action menu, then Ctrl-A «whatever» would get it.
<jsled> Looks like 'p' is unused.
<jsled> Which isn't quite the same as a Ctrl-S global shortcut, but it's trivially easy to change.
<jsled> (literally, make the string "Sp_lit Transaction" (or maybe it's "S_plit Transaction").

For completeness, it'd be {Ctrl-A p}, then.

Created attachment 114446 [details] [review]
patch to add Ctrl + M as keyboard shortcut for multiline transactions

I would have thought that the attached patch would be adding an application wide shortccut to toggle split transactions.  Alas, it is not working.

In the meantime, I have implemented the litte longer keyboard access via the menu.  It was missing for German locale: http://svn.gnucash.org/trac/changeset/17315

Wow, this is really old..

Adjusting Hotkeys per user basis

The accelerator map can be edited on Windows (where it's somewhere like C:\Users\USERNAME\.gnucash\accelerator-map in the case of Vista) or Mac (where it's ~/Library/Application Settings/Gnucash/acclerator-map), and Linux (it should be in ~/.gnucash/accelerator-map).  

Here is a sample:
(gtk_accel_path "<Actions>/GncPluginPageRegisterActions/SplitTransactionAction" "<Primary>space")

You can of course change it to whatever works in your situation..

I hope this helps! We use WYSIWYG shortcut editing in Gnome, but it doesn't work for every environment, it is somewhat mentioned here: 
http://wiki.gnucash.org/wiki/Keyboard_Shortcuts
but not until after 2012..

GnuCash bug tracking has moved to a new Bugzilla host. The new URL for this bug is https://bugs.gnucash.org/show_bug.cgi?id=542403. Please continue processing the bug there and please update any external references or bookmarks.