From: "Clément Pit--Claudel" <clement.pit@gmail.com>
To: 24617@debbugs.gnu.org
Subject: bug#24617: 26.0.50; Handlers in `condition-case' should have programmatic access to the backtrace
Date: Tue, 4 Oct 2016 15:41:33 -0400 [thread overview]
Message-ID: <70fe21b3-e7d9-111c-394c-f8554ac90453@gmail.com> (raw)
In-Reply-To: <wvr4y4249iid.fsf@a.muc.corp.google.com>
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This sounds like a great idea!
As an aside, note that these things are not impossible; just tricky. You just need to register your own debugger, then in that debugger function re-throw the error after recording the backtrace. You also need to increment num-nonmacro-input-events from the debugger.
Clément.
On 2016-10-04 12:38, Philipp Stephani wrote:
>
> Currently a handler in a `condition-case' form doesn't have access to
> the backtrace that was active when the signal was raised. This makes
> many useful things impossible, such as re-raising signals or returning
> the backtrace to emacsclient. I suggest either adding true exception
> objects (storing the error symbol, data, and backtrace), or at least
> providing a dynamic variable with the current backtrace.
>
>
> In GNU Emacs 26.0.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.8)
> of 2016-10-04 built on localhost
> Repository revision: e2913dc880b9843bf69cf885270551bafeb46120
> Windowing system distributor 'The X.Org Foundation', version 11.0.11501000
> System Description: Ubuntu 14.04 LTS
>
> Recent messages:
> For information about GNU Emacs and the GNU system, type C-h C-a.
>
> Configured using:
> 'configure --with-modules --enable-checking
> --enable-check-lisp-object-type'
>
> Configured features:
> XPM JPEG TIFF GIF PNG SOUND GSETTINGS NOTIFY GNUTLS FREETYPE XFT ZLIB
> TOOLKIT_SCROLL_BARS GTK3 X11 MODULES
>
> Important settings:
> value of $LANG: en_US.UTF-8
> locale-coding-system: utf-8-unix
>
> Major mode: Lisp Interaction
>
> Minor modes in effect:
> tooltip-mode: t
> global-eldoc-mode: t
> electric-indent-mode: t
> mouse-wheel-mode: t
> tool-bar-mode: t
> menu-bar-mode: t
> file-name-shadow-mode: t
> global-font-lock-mode: t
> font-lock-mode: t
> blink-cursor-mode: t
> auto-composition-mode: t
> auto-encryption-mode: t
> auto-compression-mode: t
> line-number-mode: t
> transient-mark-mode: t
>
> Load-path shadows:
> None found.
>
> Features:
> (shadow sort mail-extr emacsbug message subr-x puny seq byte-opt gv
> bytecomp byte-compile cl-extra help-mode cconv cl-loaddefs pcase cl-lib
> dired dired-loaddefs format-spec rfc822 mml easymenu mml-sec
> password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs
> mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
> mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
> mail-utils time-date mule-util tooltip eldoc electric uniquify
> ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win
> term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
> tabulated-list newcomment elisp-mode lisp-mode prog-mode register page
> menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
> syntax facemenu font-core term/tty-colors frame cl-generic cham georgian
> utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
> japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european
> ethiopic indian cyrillic chinese charscript case-table epa-hook
> jka-cmpr-hook help simple abbrev obarray minibuffer cl-preloaded nadvice
> loaddefs button faces cus-face macroexp files text-properties overlay
> sha1 md5 base64 format env code-pages mule custom widget
> hashtable-print-readable backquote inotify dynamic-setting
> system-font-setting font-render-setting move-toolbar gtk x-toolkit x
> multi-tty make-network-process emacs)
>
> Memory information:
> ((conses 16 97780 8564)
> (symbols 48 20400 0)
> (miscs 40 325 144)
> (strings 32 17956 4891)
> (string-bytes 1 589476)
> (vectors 16 13791)
> (vector-slots 8 454059 6998)
> (floats 8 183 34)
> (intervals 56 214 0)
> (buffers 976 12)
> (heap 1024 50411 1118))
>
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next prev parent reply other threads:[~2016-10-04 19:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-04 16:38 bug#24617: 26.0.50; Handlers in `condition-case' should have programmatic access to the backtrace Philipp Stephani
2016-10-04 19:41 ` Clément Pit--Claudel [this message]
2016-12-28 19:33 ` Philipp Stephani
2016-10-05 6:16 ` Helmut Eller
2016-12-28 20:08 ` Philipp Stephani
2016-12-29 9:01 ` Helmut Eller
2016-12-29 14:02 ` Clément Pit--Claudel
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