[roger64]

@Ahmad Samir

Thanks for providing a very nice code.

Your first command, the list of used styles in the text, represents a good part of the answer. Would it be possible to add, for each of the listed styles, the occurrences of each of them?

I mean, to get a list of this kind: |Italdroite 25|Header 12| and so on...
We could focus later on the least used items.

Spoiler:

roger@lmde64 ~/Bureau/Coups/OEBPS/Text $ pcregrep -o -h 'class=".+?"' * | sort -u | perl -p -e 's/class="//' | perl -p -e 's/("\n| )/|/' | perl -p -e 's/\|$//g'
Centrage|Chanson|frameFrame|Header|Heading|Italdroite|let|let1|let2|smcpCentrage|smcpChanson|smcpDroite|smcpIncise|smcpTypeA|smcpTypeV|Standard|Subtitleroger@lmde64 ~/Bureau/Coups/OEBPS/Text $

I did not find the second one so useful: it somewhat replicates the style sheet and is a little too verbose, or, more probably, I missed something...