Solution : https://service.sap.com/sap/support/notes/1506841 (SAP Service marketplace login required)
Key words :
%appdata%\sap\sap gui\abap editorthe, settings\<user>\sapworkdir\ab4_datanew directory, abap code completion _user, xml - key mappings abap_user, abap edit control, xml - defined patterns, xml - defined pattern, language specific patterns, xml - general settings, key mappings
Related Notes :
1442303 | SAP GUI 7.20 - replacement of SAPWORKDIR |
1042863 | Inserting code hints using the ENTER key |