I just started trying out "Strip Kobo DRM Remnants" when I found that it's modifying epubs that were never a kepub and have no Kobo artifacts at all. I ran a comparison and confirmed that the changes are not related to Kobo DRM.
Examples:
Code:
Before:
<meta content="jacket" name="calibre-content" />
After:
<meta content="jacket" name="calibre-content"/>
Code:
Before:
<div class="calibrerescale"></div>
After:
<div class="calibrerescale"/>
Opening the epub in Sigil reverses these because I have "clean on open" enabled. (I like it prettied when I'm editing in Sigil). So I'm getting the false impression from the plugin that 80% of my library has Kobo DRM to remove, when it's more like 2%.
These changes are also made with the de-indent and strip-spans options. Including it in Strip Kobo DRM as well is redundant and misleading I think. Would it be possible to remove this, so that Strip Kobo DRM does that and nothing else?