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Link to open PDF at a specific page
From: |
Georges Ko |
Subject: |
Link to open PDF at a specific page |
Date: |
Sat, 14 Nov 2020 16:46:24 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.1 (windows-nt) Hamster/2.0.0.1 |
Hi,
I'd like to open a PDF file to a specific page from a link, using the
default PDF viewer in Windows (same as w32-shell-execute "open"), which
opens a browser.
With a browser, I can open it with this HTML link:
<a href="file:///c:/a/b/c/file.pdf#page=4">Page 4</a>
This link as an Org mode link doesn't work:
file:///c:/a/b/c/file.pdf#page=4
as "#page=4" is interpreted as part of the filename by w32-shell-execute.
If I modify org-file-apps for PDF to:
("\\.pdf::\\([0-9]+\\)\\'" . "browser file:///%s#page=%1")
and if the Org link is:
file:///c:/a/b/c/file.pdf::4
it doesn't work because the argument passed to browser is:
file:///"c:/a/b/c/file.pdf"#page=4
A quick workaround is to modify org-open-file by removing
shell-quote-argument, from:
(shell-quote-argument (convert-standard-filename file))
to
(convert-standard-filename file)
to get the following string, which correctly opens page 4.
"file:///c:/a/b/c/file.pdf#page=4"
If I export the file as HTML, it is output as:
<a href="file:///c:/a/b/c/file.pdf#MissingReference">...</a>
so I modified org-html-link from:
(concat raw-path
"#"
(org-publish-resolve-external-link option path t))
to
(concat raw-path
"#"
(let ((r (org-publish-resolve-external-link option path t)))
(or (and (string= r "MissingReference")
(string-match "\\.pdf\\'" path)
(string-match "[0-9]+" option)
(format "page=%s" option))
r)))
which generates the wanted HTML link:
<a href="file:///c:/a/b/c/file.pdf#page=4">...</a>
Is there any way less quick & dirty to achieve this?
Thanks!
- Link to open PDF at a specific page,
Georges Ko <=