When using old-style figures, what are the special cases of using lining figures (if any), apart from maths?

For instance, are reference marks one such instance?

Some 1998 text which references~[1]

where the 1998 would be in old-style, should the [1] be in lining-style? i.e.,

Some 1998 text which references~$[1]$

Same with equation number marks? How about percents?

In 1989, there was 25\%


In 1989, there was $25$\%

(side question, should there be a \thinspace or something between the percent-sign and the numbers?)


From Bringhurst, 3.2.1:

Use titling [lining] figures with full caps, and text [oldstyle] figures in all other circumstances

Some may find that a bit dogmatic, but I think, at least, that it's a good starting-point.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.