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Don't fail to indent-sexp before a full sexp (Bug#31984)

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* lisp/emacs-lisp/lisp-mode.el (indent-sexp): Only signal error if the
initial forward-sexp fails.  Suppress scan-error forn any of the
forward-sexp calls after that.
* test/lisp/emacs-lisp/lisp-mode-tests.el (indent-sexp-cant-go): New
test.
This commit is contained in:
Noam Postavsky 2018-07-27 19:41:39 -04:00
parent d24c5f26bf
commit 8579105393
2 changed files with 27 additions and 8 deletions
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24
lisp/emacs-lisp/lisp-mode.el
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@ -1199,14 +1199,22 @@ ENDPOS is encountered."
(setq endpos (copy-marker
(if endpos endpos
;; Get error now if we don't have a complete sexp
;; after point. We actually look for a sexp which
;; ends after the current line so that we properly
;; indent things like #s(...). This might not be
;; needed if Bug#15998 is fixed.
(let ((eol (line-end-position)))
(save-excursion (while (and (< (point) eol) (not (eobp)))
(forward-sexp 1))
(point))))))
;; after point.
(save-excursion
(let ((eol (line-end-position)))
(forward-sexp 1)
;; We actually look for a sexp which ends
;; after the current line so that we properly
;; indent things like #s(...). This might not
;; be needed if Bug#15998 is fixed.
(condition-case ()
(while (and (< (point) eol) (not (eobp)))
(forward-sexp 1))
;; But don't signal an error for incomplete
;; sexps following the first complete sexp
;; after point.
(scan-error nil)))
(point)))))
(save-excursion
(while (let ((indent (lisp-indent-calc-next parse-state))
(ppss (lisp-indent-state-ppss parse-state)))