From: Nicholas Harrison <nicholasharrison222@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: "Basil L. Contovounesios" <contovob@tcd.ie>, 44338@debbugs.gnu.org
Subject: bug#44338: 27.1; EWW can't download and view pdf
Date: Wed, 4 Nov 2020 16:43:13 -0700 [thread overview]
Message-ID: <CAGdSj9HEKjat=x+4W9FO5jZmWgK8_Z=-0g9h9Oy6coxaXeEAFg@mail.gmail.com> (raw)
In-Reply-To: <83tuu5b1oh.fsf@gnu.org>
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Not sure if this is much help, but here is the backtrace given when I do
the following steps:
1. emacs -Q
2. M-: (debug-on-entry 'select-safe-coding-system) RET
3. M-x eww RET https://www.gnu.org/software/emacs/manual/pdf/emacs-xtra.pdf
RET
(no backtrace here)
4. M-x doc-view-mode RET
Debugger entered--entering a function:
* select-safe-coding-system(1 381654 iso-latin-1-dos nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww pdf!")
write-region(nil nil "c:/Users/nicho/AppData/Local/Temp/docview1001/!eww
pdf!")
doc-view-mode()
funcall-interactively(doc-view-mode)
call-interactively(doc-view-mode record nil)
command-execute(doc-view-mode record)
execute-extended-command(nil "doc-view-mode" "doc-view-mo")
funcall-interactively(execute-extended-command nil "doc-view-mode"
"doc-view-mo")
call-interactively(execute-extended-command nil nil)
command-execute(execute-extended-command)
5. ESC ESC ESC
6. RET (it asks to choose an encoding, chose default raw-text)
Debugger entered--returning value: raw-text
select-safe-coding-system(1 381654 iso-latin-1-dos nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww...")
write-region(nil nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww...")
doc-view-mode()
funcall-interactively(doc-view-mode)
call-interactively(doc-view-mode record nil)
command-execute(doc-view-mode record)
execute-extended-command(nil "doc-view-mode" "doc-view-mo")
funcall-interactively(execute-extended-command nil "doc-view-mode"
"doc-view-mo")
call-interactively(execute-extended-command nil nil)
command-execute(execute-extended-command)
Debugger entered--entering a function:
* select-safe-coding-system(1 383892 no-conversion nil)
md5(#<buffer *temp*>)
doc-view--current-cache-dir()
doc-view-already-converted-p()
doc-view-initiate-display()
doc-view-mode()
funcall-interactively(doc-view-mode)
call-interactively(doc-view-mode record nil)
command-execute(doc-view-mode record)
execute-extended-command(nil "doc-view-mode" "doc-view-mo")
funcall-interactively(execute-extended-command nil "doc-view-mode"
"doc-view-mo")
call-interactively(execute-extended-command nil nil)
command-execute(execute-extended-command)
Debugger entered--returning value: no-conversion
select-safe-coding-system(1 383892 no-conversion nil)
md5(#<buffer *temp*>)
doc-view--current-cache-dir()
doc-view-already-converted-p()
doc-view-initiate-display()
doc-view-mode()
funcall-interactively(doc-view-mode)
call-interactively(doc-view-mode record nil)
command-execute(doc-view-mode record)
execute-extended-command(nil "doc-view-mode" "doc-view-mo")
funcall-interactively(execute-extended-command nil "doc-view-mode"
"doc-view-mo")
call-interactively(execute-extended-command nil nil)
command-execute(execute-extended-command)
Debugger entered--entering a function:
* select-safe-coding-system("100" nil prefer-utf-8 nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww
pdf!-2072e1249b26ee28e656f1a01f0cb4a9/resolution.el")
write-region("100" nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww
pdf!-2072e1249b26ee28e656f1a01f0cb4a9/resolution...." nil silently)
#f(compiled-function () #<bytecode 0x42abe9>)()
doc-view-sentinel(#<process pdf/ps->png> "finished\n")
Debugger entered--returning value: prefer-utf-8-dos
select-safe-coding-system("100" nil prefer-utf-8 nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww...")
write-region("100" nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww..." nil silently)
#f(compiled-function () #<bytecode 0x42abe9>)()
doc-view-sentinel(#<process pdf/ps->png> "finished\n")
Debugger entered--returning value: prefer-utf-8-dos
select-safe-coding-system("100" nil prefer-utf-8 nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww...")
write-region("100" nil
"c:/Users/nicho/AppData/Local/Temp/docview1001/!eww..." nil silently)
#f(compiled-function () #<bytecode 0x42abe9>)()
doc-view-sentinel(#<process pdf/ps->png> "finished\n")
Let me know if I was supposed to do something differently.
Nicholas
On Wed, Nov 4, 2020 at 8:07 AM Eli Zaretskii <eliz@gnu.org> wrote:
> > From: Nicholas Harrison <nicholasharrison222@gmail.com>
> > Date: Tue, 3 Nov 2020 16:52:40 -0700
> > Cc: 44338@debbugs.gnu.org
> >
> > This can be (partially) corrected by running the following code before
> the steps 2 and 3:
> > (add-to-list 'mailcap-user-mime-data
> > '((type . "application/pdf")
> > (viewer . doc-view-mode)))
> >
> > This chooses a view mode for the pdf but that brings the second problem.
> This selects the default encoding
> > of raw-text and the conversion fails:
>
> You say it selects raw-text, but the screenshot you sent clearly shows
> that Emacs was trying to use iso-latin-1-dos. In which case the
> failure is easily understandable, but I don't immediately see where
> did that value come from (it's most probably the default value of
> buffer-file-coding-system for you, but since eww-display-pdf binds
> coding-system-for-write, the question is why that value isn't being
> used). Could you perhaps produce a backtrace from that situation?
> For example, like this:
>
> M-: (debug-on-entry 'select-safe-coding-system) RET
>
> and then repeat the recipe.
>
> In any case, this isn't right:
>
> (defun eww-display-pdf ()
> (let ((data (buffer-substring (point) (point-max))))
> (pop-to-buffer-same-window (get-buffer-create "*eww pdf*"))
> (let ((coding-system-for-write 'raw-text) <<<<<<<<<<<<<<<<<<<<<<
> (inhibit-read-only t))
> (erase-buffer)
> (insert data)
> (mailcap-view-mime "application/pdf")))
> (goto-char (point-min)))
>
> We should use 'raw-text-unix here, since the buffer contents is a
> stream of raw bytes.
>
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next prev parent reply other threads:[~2020-11-04 23:43 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-30 22:20 bug#44338: 27.1; EWW can't download and view pdf Nicholas Harrison
2020-10-31 13:43 ` Basil L. Contovounesios
2020-10-31 16:35 ` Jean Louis
2020-10-31 17:14 ` Nicholas Harrison
2020-10-31 23:16 ` Nicholas Harrison
2020-11-01 14:56 ` Basil L. Contovounesios
2020-11-03 23:24 ` Basil L. Contovounesios
2020-11-05 15:13 ` Lars Ingebrigtsen
2020-11-05 17:37 ` Basil L. Contovounesios
2020-11-01 14:20 ` Lars Ingebrigtsen
2020-11-01 14:59 ` Basil L. Contovounesios
2020-11-02 14:59 ` Lars Ingebrigtsen
2020-11-02 16:50 ` Basil L. Contovounesios
2020-11-03 14:49 ` Lars Ingebrigtsen
2020-11-03 21:28 ` Basil L. Contovounesios
2020-11-05 15:12 ` Lars Ingebrigtsen
2020-11-05 17:36 ` Basil L. Contovounesios
2020-11-05 20:40 ` Basil L. Contovounesios
2020-11-03 23:52 ` Nicholas Harrison
2020-11-04 0:23 ` Basil L. Contovounesios
2020-11-04 1:01 ` Nicholas Harrison
2020-11-04 15:10 ` Eli Zaretskii
2020-11-04 0:25 ` Basil L. Contovounesios
2020-11-04 15:07 ` Eli Zaretskii
2020-11-04 20:01 ` Basil L. Contovounesios
2020-11-04 23:43 ` Nicholas Harrison [this message]
2020-11-05 13:42 ` Eli Zaretskii
2020-11-05 13:42 ` Eli Zaretskii
2020-11-05 15:18 ` Nicholas Harrison
2020-11-05 15:49 ` Eli Zaretskii
2020-11-05 17:52 ` Nicholas Harrison
2020-11-05 17:55 ` Eli Zaretskii
2020-11-05 19:04 ` Basil L. Contovounesios
2020-11-05 19:20 ` Eli Zaretskii
2020-11-05 21:17 ` Basil L. Contovounesios
2020-11-06 5:29 ` Eli Zaretskii
2020-11-05 20:40 ` Lars Ingebrigtsen
2020-11-05 21:25 ` Basil L. Contovounesios
2020-11-06 2:12 ` Nicholas Harrison
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