Quote:
Originally Posted by theducks
There are features of Sigil I like better and there are edit-ebook features I like. So I use both and do NOT want either +fixed+ .  |
No worries there.
It's not Kovid's duty to change things in Calibre just because Sigil handles things differently. Nor are we going to worry about accommodating every single thing that Calibre does differently.
Calibre (and the Modify Epub plugin is using calibre's own code to generate the Jacket) doesn't use (and will sometimes omit or remove) doctypes and xml declarations. Sigil uses (and will want to insert) doctypes and xml declarations.
Those who use both programs for editing epubs are simply going to have to get used to seeing Sigil's warning about missing doctypes.
There are some differences in the two programs that are simple and unobtrusive to accommodate, but doctypes (and doctype insertions) vs no doctypes (and doctype omission/removal) is not one of them.