Post chars are defined in (nth 1 org-emphasis-regexp-components) in emacs org.
When I initially adapted the list of chars for go, I failed to check how it's
actually used (further down in org.el):
(string-match (concat "[" (nth 1 erc) "\n]") (char-to-string (char-after (point))))
Due to the surrounding [] the `\\` in
'("-[:space:]('\"{" "-[:space:].,:!?;'\")}\\[" "[:space:]" "." 1)
is actually a literal backslash, not an escape of the opening bracket I
guess. I'm not in the mood for thinking any harder about this, so let's hope
this is right. yolo.
Turns out Org mode supports image links natively and we don't have to go out of
spec!
From https://orgmode.org/manual/Images-in-HTML-export.html:
[...] if the description part of the Org link is itself another link, such as
‘file:’ or ‘http:’ URL pointing to an image, the HTML export back-end in-lines
this image and links to [...]
It's possible for the input to end right after the explicit line break,
i.e. after the second \. This currently leads to an out of range index into
input (as the for loop starts with start+2 and [start:start+1] is the \\).
The regexps are meant to extract a match immediately following the cursor - the
anchor should have been there from the beginning...
Also empty sub/superscript doesn't make sense - nested sub/superscript does
make sense but yagni.
... hopefully correctly
This will hopefully improve ease of developing (more granular test results) and
prepares us for adding example org->html renders for gh-pages
