Fossil

  undo_all_filesystem(0);
}

/*
** COMMAND: undo
** COMMAND: redo
**
** Usage: %fossil undo ?OPTIONS? ?FILENAME...?
**    or: %fossil redo ?OPTIONS? ?FILENAME...?
**
** Undo the changes to the working checkout caused by the most recent
** of the following operations:
**
**    (1) fossil update             (5) fossil stash apply
**    (2) fossil merge              (6) fossil stash drop
**    (3) fossil revert             (7) fossil stash goto
**    (4) fossil stash pop
**
** If FILENAME is specified then restore the content of the named
** file(s) but otherwise leave the update or merge or revert in effect. 
** The redo command undoes the effect of the most recent undo.
**
** If the --explain option is present, no changes are made and instead
** the undo or redo command explains what actions the undo or redo would
** have done had the --explain been omitted.
**
** A single level of undo/redo is supported.  The undo/redo stack
** is cleared by the commit and checkout commands.
**
** Options:
**   --explain    do not make changes but show what would be done
**
** See also: commit, status
*/
void undo_cmd(void){
  int isRedo = g.argv[1][0]=='r';
  int undo_available;
  int explainFlag = find_option("explain", 0, 0)!=0;
  const char *zCmd = isRedo ? "redo" : "undo";
  db_must_be_within_tree();