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How can I format certain characters without using macros? For example, if I want to make all instances of the character ‘f’ bold, how can I make TeX do it automatically?
I’m using XeLaTeX to process my document.
(Actually, the document is written in Simplified Chinese. The Asian full stop symbol (‘。’, U+3002) in my fonts, however, have their small circle placed at the center, which is inconsistent with the standard of the Chinese Mainland. Since full stops appear after every sentence, it would seem too cumbersome to use macros.)