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* bug#63881: 29.0.91; apropos-documentation fails when load-history contains element whose CAR is nil
@ 2023-06-04  3:07 Visuwesh
  2023-06-04  5:31 ` Eli Zaretskii
  0 siblings, 1 reply; 7+ messages in thread
From: Visuwesh @ 2023-06-04  3:07 UTC (permalink / raw)
  To: 63881


As per (info "(elisp) Where Defined"), load-history may contain an
element whose CAR is nil if eval-buffer was used to evaluate a defun
in a non-file-visiting buffer.

After such an entry is added to load-history, apropos-documentation
fails with the backtrace at end.

To reproduce the issue,

    1. emacs -Q
    2. Insert (defun test () t)
    3. M-x eval-buffer RET
    4. Confirm that a nil entry is present in load-history by evaluating
       (alist-get nil load-history 'none)
    5. C-h d any RET

The problem lies in apropos--map-preloaded-atoms in the part

    (dolist (x load-history)
      (when (string-match preloaded-regexp (car x))
                                           ^^^^^^^^
        (dolist (def (cdr x))
          (cond
           ((symbolp def) (funcall f def))
           ((eq 'defun (car-safe def)) (funcall f (cdr def)))))))))


----


Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match("\\`/home/viz/lib/ports/emacs/lisp/\\(?:abbrev\\|b\\(?:..." nil)
  (if (string-match preloaded-regexp (car x)) (progn (let ((tail (cdr x))) (while tail (let ((def (car tail))) (cond ((symbolp def) (funcall f def)) ((eq ... ...) (funcall f ...))) (setq tail (cdr tail)))))))
  (let ((x (car tail))) (if (string-match preloaded-regexp (car x)) (progn (let ((tail (cdr x))) (while tail (let ((def ...)) (cond (... ...) (... ...)) (setq tail (cdr tail))))))) (setq tail (cdr tail)))
  (while tail (let ((x (car tail))) (if (string-match preloaded-regexp (car x)) (progn (let ((tail (cdr x))) (while tail (let (...) (cond ... ...) (setq tail ...)))))) (setq tail (cdr tail))))
  (let ((tail load-history)) (while tail (let ((x (car tail))) (if (string-match preloaded-regexp (car x)) (progn (let ((tail ...)) (while tail (let ... ... ...))))) (setq tail (cdr tail)))))
  (let ((preloaded-regexp (concat "\\`" (regexp-quote lisp-directory) (regexp-opt preloaded-file-list) "\\.elc?\\'"))) (let ((tail load-history)) (while tail (let ((x (car tail))) (if (string-match preloaded-regexp (car x)) (progn (let (...) (while tail ...)))) (setq tail (cdr tail))))))
  apropos--map-preloaded-atoms((closure ((sv) (sf) (v) (f)) (symbol) (progn (setq f (apropos-safe-documentation symbol)) (setq v (get symbol 'variable-documentation))) (if (integerp v) (setq v nil)) (progn (setq f (apropos-documentation-internal f)) (setq v (apropos-documentation-internal v))) (progn (setq sf (apropos-score-doc f)) (setq sv (apropos-score-doc v))) (if (or f v) (if (setq apropos-item (cdr (assq symbol apropos-accumulator))) (progn (if f (progn (setcar ... f) (setcar apropos-item ...))) (if v (progn (setcar ... v) (setcar apropos-item ...)))) (setq apropos-accumulator (cons (list symbol (+ ... sf sv) f v) apropos-accumulator))))))
  funcall(apropos--map-preloaded-atoms (closure ((sv) (sf) (v) (f)) (symbol) (progn (setq f (apropos-safe-documentation symbol)) (setq v (get symbol 'variable-documentation))) (if (integerp v) (setq v nil)) (progn (setq f (apropos-documentation-internal f)) (setq v (apropos-documentation-internal v))) (progn (setq sf (apropos-score-doc f)) (setq sv (apropos-score-doc v))) (if (or f v) (if (setq apropos-item (cdr (assq symbol apropos-accumulator))) (progn (if f (progn (setcar ... f) (setcar apropos-item ...))) (if v (progn (setcar ... v) (setcar apropos-item ...)))) (setq apropos-accumulator (cons (list symbol (+ ... sf sv) f v) apropos-accumulator))))))
  (let ((standard-input (current-buffer)) (apropos-sort-by-scores apropos-documentation-sort-by-scores) f v sf sv) (apropos-documentation-check-doc-file) (funcall (if do-all #'mapatoms #'apropos--map-preloaded-atoms) #'(lambda (symbol) (progn (setq f (apropos-safe-documentation symbol)) (setq v (get symbol 'variable-documentation))) (if (integerp v) (setq v nil)) (progn (setq f (apropos-documentation-internal f)) (setq v (apropos-documentation-internal v))) (progn (setq sf (apropos-score-doc f)) (setq sv (apropos-score-doc v))) (if (or f v) (if (setq apropos-item (cdr ...)) (progn (if f ...) (if v ...)) (setq apropos-accumulator (cons ... apropos-accumulator)))))) (apropos-print nil "\n----------------\n" nil t))
  (progn (let ((standard-input (current-buffer)) (apropos-sort-by-scores apropos-documentation-sort-by-scores) f v sf sv) (apropos-documentation-check-doc-file) (funcall (if do-all #'mapatoms #'apropos--map-preloaded-atoms) #'(lambda (symbol) (progn (setq f (apropos-safe-documentation symbol)) (setq v (get symbol ...))) (if (integerp v) (setq v nil)) (progn (setq f (apropos-documentation-internal f)) (setq v (apropos-documentation-internal v))) (progn (setq sf (apropos-score-doc f)) (setq sv (apropos-score-doc v))) (if (or f v) (if (setq apropos-item ...) (progn ... ...) (setq apropos-accumulator ...))))) (apropos-print nil "\n----------------\n" nil t)))
  (unwind-protect (progn (let ((standard-input (current-buffer)) (apropos-sort-by-scores apropos-documentation-sort-by-scores) f v sf sv) (apropos-documentation-check-doc-file) (funcall (if do-all #'mapatoms #'apropos--map-preloaded-atoms) #'(lambda (symbol) (progn (setq f ...) (setq v ...)) (if (integerp v) (setq v nil)) (progn (setq f ...) (setq v ...)) (progn (setq sf ...) (setq sv ...)) (if (or f v) (if ... ... ...)))) (apropos-print nil "\n----------------\n" nil t))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))
  (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (let ((standard-input (current-buffer)) (apropos-sort-by-scores apropos-documentation-sort-by-scores) f v sf sv) (apropos-documentation-check-doc-file) (funcall (if do-all #'mapatoms #'apropos--map-preloaded-atoms) #'(lambda (symbol) (progn ... ...) (if ... ...) (progn ... ...) (progn ... ...) (if ... ...))) (apropos-print nil "\n----------------\n" nil t))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer))))
  (let ((temp-buffer (generate-new-buffer " *temp*" t))) (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn (let ((standard-input (current-buffer)) (apropos-sort-by-scores apropos-documentation-sort-by-scores) f v sf sv) (apropos-documentation-check-doc-file) (funcall (if do-all #'mapatoms #'apropos--map-preloaded-atoms) #'(lambda ... ... ... ... ... ...)) (apropos-print nil "\n----------------\n" nil t))) (and (buffer-name temp-buffer) (kill-buffer temp-buffer)))))
  apropos-documentation(("pcomplete") nil)
  funcall-interactively(apropos-documentation ("pcomplete") nil)
  call-interactively(apropos-documentation nil nil)
  command-execute(apropos-documentation)



In GNU Emacs 29.0.91 (build 2, x86_64-pc-linux-gnu, X toolkit, Xaw
 scroll bars) of 2023-06-01 built on astatine
Repository revision: 17c7915ab947ebeec6ea5ad3eb4cad1f24d5d4fc
Repository branch: emacs-29
Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
System Description: Debian GNU/Linux 12 (bookworm)

Configured using:
 'configure --with-sound=alsa --with-x-toolkit=lucid --with-json
 --without-xaw3d --without-gconf --without-libsystemd --without-cairo'
Configured features:
ACL DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON
LIBOTF LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG
SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP X11 XDBE XFT
XIM XINPUT2 XPM LUCID ZLIB
Important settings:
  value of $LC_MONETARY: ta_IN.UTF-8
  value of $LC_NUMERIC: ta_IN.UTF-8
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix

Major mode: ELisp/l

Minor modes in effect:
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  shell-dirtrack-mode: t
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  global-eldoc-mode: t
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  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  use-hard-newlines: t
  tab-bar-history-mode: t
  tab-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  undelete-frame-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  abbrev-mode: t

Load-path shadows:
/home/viz/lib/emacs/straight/build/transient/transient hides /home/viz/lib/ports/emacs/lisp/transient

Features:
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erc-backend erc-networks erc-common erc-compat erc-loaddefs pcmpl-linux
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ansi-osc ansi-color ring cus-edit wid-edit pdf-view password-cache
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time format-spec battery dbus filenotify xml dom tamil99 quail
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composite emoji-zwj charscript charprop case-table epa-hook
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dynamic-setting system-font-setting font-render-setting x-toolkit
xinput2 x multi-tty make-network-process emacs)

Memory information:
((conses 16 3698457 420989)
 (symbols 48 71567 125)
 (strings 32 485043 37152)
 (string-bytes 1 42116953)
 (vectors 16 202430)
 (vector-slots 8 3912716 375269)
 (floats 8 1712 1293)
 (intervals 56 484153 8174)
 (buffers 976 252))





^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2023-06-10 17:49 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-06-04  3:07 bug#63881: 29.0.91; apropos-documentation fails when load-history contains element whose CAR is nil Visuwesh
2023-06-04  5:31 ` Eli Zaretskii
2023-06-04  8:34   ` Visuwesh
2023-06-05  7:50   ` Matt Beshara
2023-06-10  9:25   ` Eli Zaretskii
2023-06-10 16:18     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-06-10 17:49       ` Eli Zaretskii

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