[cybmole]

ok =- i get how to do epub + sigil.

for notepad++ I need to copy the epub, rename it as zip, then somehow open all files at once, edit, then save all files at once, then rename back to epub.

that seems much more complicated, suggesting sigil is the better choice ?

why I'd want to go to rtf and back is for the spell & grammar checker

I've done some via .rtf OK, but in others calibre crops one or more characters from left margin when it converts from epub/mobi to RTF. I've not searched for that bug but what seems to trigger it is a fancy initial indented capital letter in the original pdf source.pdf to epub goes ok then epub to rtf is screwed.:

I'll make a new .rtf conversion bug thread

calibre rtf output - preprocessing unticked:
" He'd always pictured the end of the world being a bit more … industrial. Loud
machines, cars crashing, people screaming, guns-a-blazing. Perhaps a world-cracking bomb that would shatter the Earth into bits.

ut here, there was nothing. Nothing at all, save for some calf-high grasses, endless rocks, and the towering white vistas of glaciers raised high on the horizon.

reenland was far from the minds of most apocalyptic visionaries. And yet here he was, the man responsible for stopping the end of the world. No cars crashing, none of that nonsense. Just a tiny virus, and some pigs.

ydney Chapman "

same text - epub - calibre reader:
"He'd always pictured the end of the world being a bit more … industrial. Loud
machines, cars crashing, people screaming, guns-a-blazing. Perhaps a world-cracking bomb that would shatter the Earth into bits.
But here, there was nothing. Nothing at all, save for some calf-high grasses, endless rocks, and the towering white vistas of glaciers raised high on the horizon.
Greenland was far from the minds of most apocalyptic visionaries. And yet here he was, the man responsible for stopping the end of the world. No cars crashing, none of that nonsense. Just a tiny virus, and some pigs.
Sydney Chapman...."

original source was pdf - the cropped characters were large font in original