Spacing of infix operators and functions

tmke8 commented 2 months ago

What are the rules?

at the end of a group (i.e., directly before }), infix operators need to be put in prefix(?) mode: x={4+}4
- you would think it would be postfix mode, but that's of course already automatically set if you write {4+} (and setting it explicitly doesn't change anything), but this does not produce the expected spacing
- this rule also covers 4{+}4 #183
after a relation, infix operators need to be put into prefix mode: x=+4 #182
before a relation, infix operators need to have reduced spacing in front: 4+=x
- this one is really weird, and maybe not worth fixing; if you try this out in LaTeX, there is no space between 4 and + (as little space as in "prefix" mode) but between + and = there is a ton of space
after a relation, a relation has 0 spacing: 3 = = 3
if a function like \log is followed by an identifier, there needs to be a small space #207

Other scenarios seem to already be covered by MathML's rules (for example, x=4{+4} seems to work fine).

tmke8 commented 1 month ago

tmke8 commented 4 weeks ago

Question for making progress on this: What kind of global state do we need to handle all these cases?

tmke8 commented 4 weeks ago

One easy thing I could do is setting lspace and rspace to 0 on operators after a successful squeeze.

tmke8 commented 1 week ago

Maybe I should just insert a <mspace width="0.1667em"/> after functions. Except at the end of a group?

This just works in Firefox (the space that Firefox normally inserts doesn't appear then).

tmke8 / latex2mmlc