The Formula Editor LibreOffice Math provides an option to edit the default typefaces of variables, functions, numbers and text. Unfortunately operators are not affected by any of those categories. Few operators are not locking that pretty, especially +, -> (rightarrow), <- (leftarrow), => (drarrow), <= (dlarrow).
It would be awesome, if this could be fixed, either by changing the typeface of those particular characters or even better by an 5th option to chose the typeface for operators. That + doesn't fit to the rest of the operators becomes obvious by comparing + and – (minus). The lines of the plus are much heavier than the line of minus.
Steps to Reproduce:
1. Open LibreOffice Math
2. Type "a+b-c -> d <- e" and compare +, – (minus), -> (rightarrow) and -> (leftarrow)
Lineweight of plus operator and arrows is much heavier than expected
plus and minus have same line weight/fontface. Could be fixed easy by modification of typeface (+) or character (->, <-).
User Profile Reset: No
I wanted to replace the typeface with CMU serif (Computer Modern by D. E. Knuth) (https://www.fontsquirrel.com/fonts/computer-modern). I guess all operators are predefined and can not be changed. Would be nice to correct the misfitting characters or even better to have an option to choose a typeface.
The specific case is our OpenSymbol glyph chart, see bug 103740 but the request in general is issue of bug 101174
You can currently make a Tool -> Options -> Fonts 'Replacement Table' assignment to replace OpenSymbol with a more appealing font with Unicode coverage of the misc mathematical and greek symbols--YMMV
*** This bug has been marked as a duplicate of bug 101174 ***
Thanks for the hint. Unfortunately a simple replacement with a font like Computer Modern does not work, because the character mapping doesn't work well. I found the font FreeSerif, which is not pretty, but at least the character mapping works almost well. In comparison to OpenSymbol, the symbols are more persistent.