Greetings, the manual file in ASCII text format is filled with odd characters, and maybe this is a character conversion problem during the file generation. In example, you can see the problem in the third line of the plain text manual online
https://www.gnu.org/software/grep/manual/grep.txt I quote: 2 Invoking ‘grep’ It should be 2 Invoking grep or 2 Invoking 'grep' or something else. As far as I can see, the HTML format of the manual has the word "grep" between <code> tags, and I guess the problem is or was somewhat related to that, in docbook2txt or gendocs.sh; I said "was" because maybe just relaunching gendocs.sh will fix that, as the document was last updated May 13, 2023. Regards.