Symbol.source/OuterLex.source: more explicit do_recover argument; scan: pass position; removed obsolete prepare_command (now inlined in isar_syn.ML); renamed prepare_command_failsafe to prepare_command, reports tokens; load_thy: now based on ThyEdit operations, reports tokens and spans; tuned;
Symbol.source/OuterLex.source: more explicit do_recover argument;
scan: pass position;
removed obsolete prepare_command (now inlined in isar_syn.ML);
renamed prepare_command_failsafe to prepare_command, reports tokens;
load_thy: now based on ThyEdit operations, reports tokens and spans;
tuned;

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle