#2195 : Fix add_help_text function.
#2195 : Fix add_help_text function.

lino-framework/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino,lsaffre/lino,lsaffre/lino,lsaffre/lino,lino-framework/lino,lino-framework/lino,lino-framework/lino