Solution : https://service.sap.com/sap/support/notes/105904 (SAP Service marketplace login required)
Key words : 
set locale  language 'f'  country 'fr', set locale language 'f'            country 'fr', ~ftp/general/r3server/abap/note, france    set locale language oldlang, accents additional key words tcp0c, symptom french upper case letters, france upper case letters, selection language = 'f', oldlang = sy-langu, set locale
Related Notes : 
       
| 39473 | locale and TCP0C |