Editor:Problem with Check Book after using Replace image with file

Bug #1653977 reported by Jackie Stockdale on 2017-01-04
This bug affects 1 person
Affects Status Importance Assigned to Milestone

Bug Description

I've recently been cleaning up a lot of epubs by replacing tiny low-res jpgs with better pngs. I noticed this minor bug so I thought I'd report it.

I start with an epub which Check Book tells me has no errors.
In the File Browser, I use the 'Replace xxx.jpg with file ...' option to swap in a better yyy.png file.
It all works effortlessly. All the relevant html and opf references are correctly changed.

But ... I re-run Check Book and it reports an error which doesn't actually exist, because the Editor has already done what needs to be done:
'The file images/yyy.png has its mimetype specified as image/jpeg in the OPF file. The recommended mimetype for files with the extension "png" is image/png. You should change either the file extension or the mimetype in the OPF.

I can verify there is no problem by saving the epub as-is and re-opening it. Check Book tells me there are no errors.

Fixed in branch master. The fix will be in the next release. calibre is usually released every Friday.

 status fixreleased

Changed in calibre:
status: New → Fix Released
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