diff options
Diffstat (limited to 'lisp/emacs-lisp/generator.el')
| -rw-r--r-- | lisp/emacs-lisp/generator.el | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/lisp/emacs-lisp/generator.el b/lisp/emacs-lisp/generator.el index 9eb6d959645..e45260c32ac 100644 --- a/lisp/emacs-lisp/generator.el +++ b/lisp/emacs-lisp/generator.el @@ -725,17 +725,20 @@ Return the value with which ITERATOR finished iteration." (condition-symbol (cps--gensym "iter-do-condition")) (it-symbol (cps--gensym "iter-do-iterator")) (result-symbol (cps--gensym "iter-do-result"))) - `(let (,var - ,result-symbol + `(let (,result-symbol (,done-symbol nil) (,it-symbol ,iterator)) - (while (not ,done-symbol) - (condition-case ,condition-symbol - (setf ,var (iter-next ,it-symbol)) - (iter-end-of-sequence - (setf ,result-symbol (cdr ,condition-symbol)) - (setf ,done-symbol t))) - (unless ,done-symbol ,@body)) + (while + (let ((,var + (condition-case ,condition-symbol + (iter-next ,it-symbol) + (iter-end-of-sequence + (setf ,result-symbol (cdr ,condition-symbol)) + (setf ,done-symbol t))))) + (unless ,done-symbol + ,@body + ;; Loop until done-symbol is set. + t))) ,result-symbol))) (defvar cl--loop-args) |