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Old 09-05-2022, 03:22 PM   #1681
enuddleyarbl
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Posts: 787
Karma: 1538394
Join Date: Sep 2013
Device: Kobo Sage
I've started seeing this just recently, so I'm not sure if something's changed with new Calibre releases, I'm doing something different, and/or I've lost my mind. If I run Modify ePub (v 1.7.3) against an epub3 book in Calibre 6.4, the @page class in stylesheet.css gets messed up. First, Calibre adds that @page thing during conversion, but I modified it slightly to include a comment. Here's what it looks like now:
Code:
@page {
/* Basic Styling for what passes for pages in an epub */
  margin-top: 0;
  margin-left: 0;
  margin-right: 0;
  margin-bottom: 0;
}
If I run Modify ePub against a book with that in it, afterwards that @page class will look like this:
Code:
@page { margin-top: 0; margin-left: 0; margin-right: 0; margin-bottom: 0;/* Basic Styling for what passes for pages in an epub */
  margin-top: 0 }
The log for that run looks like:
Code:
Modify ePubs version (1, 7, 3)
Logfile for book ID 285 (My Test Book - 0 Margins / me)
Job details 285
  Modifying:  C:\Users\Dave\AppData\Local\Temp\calibre_g_x6det9\mwzd7iwe_modify_epub\285.epub
	Updating metadata and cover
	  Parsing xml file: content.opf
	  Parsing xml file: toc.ncx
	Looking for redundant entries in manifest
	Looking for unmanifested files
	Looking for broken links in the NCX
	ncx name:  toc.ncx
	Looping over ncx entries
	Looking for Adobe xpgt files and links to remove
	Looking for pagemaps
	Looking for Google Play pagemaps
	Looking for Adobe DRM meta tags to remove
	Looking for legacy jackets
	Adding or updating jacket
	 Current jacket removed:  jacket.xhtml
	  Manifest item removed: jacket.xhtml (calibre_jacket)
	  Spine itemref removed: calibre_jacket
	  Manifest item added: jacket.xhtml (calibre_jacket)
	  Spine item inserted: calibre_jacket at pos: 1
	Looking for html pages containing only broken image links
	Looking for non dc: elements in manifest
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	  Removing child: {http://www.idpf.org/2007/opf}meta
	Looking for html files to remove charset meta tags/encode to utf-8
	Looking for embedded fonts
	Looking for css @font-face style declarations
	Looking for inline @font-face style declarations
	Looking for CSS margins
	  Modified inline CSS margins in: margintest.xhtml
	  Modified CSS margins in: stylesheet.css
	Looking for inline javascript blocks to remove
	Looking for .js files to remove
	Applying smarten punctuation
	Stripping Kobo remnants
	Looking for files to remove: ['iTunesMetadata.plist', 'iTunesArtwork']
	Looking for files to remove: ['META-INF/calibre_bookmarks.txt']
	  Found file to remove: META-INF/calibre_bookmarks.txt
	Looking for files to remove: ['.DS_Store', 'thumbs.db']
	Looking for unused images
	Stripping spans
	Unprettying files
ePub updated in 0.07 seconds
To me, it looks like Modify ePub is recreating all the @page margin settings and then appending my comment and the first of my margin settings to that. I don't know why. If it were just cosmetics, that'd be no problem. But, Calibre's Check Book function doesn't like the duplicate margin-top at all.

Unfortunately, with chaley's comment a couple of pages back that he doesn't really maintain this any more, and with davidfor's recent passing (it looks like he did some work with the PI), I'm not sure if anyone can fix this. But, I'd appreciate it if someone would run the PI and check their @page class before and after.

Last edited by enuddleyarbl; 09-05-2022 at 03:24 PM.
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