Hello, Before creating a bug report, I would like to verify that I am not misunderstanding something and that this is indeed a bug.
It appears that a word starting with a period or apostrophe is interpreted as a request/macro call even if it does not start at the beginning of the line, under the following combination: fill mode, output line trap (\P) and text interruption (\c). This causes the word and remainder of the line to disappear from the generated output. Test doc: .po 0 .ll 100p .de M . tm M called .. .\" (1) OK if word doesn't appear at line break: AAA\PM\c AAA BBB BBB BBB BBB .CCC CCC DDD .\" (2) If, by chance, word appears at line break .\" then word and remainder of line disappear. AAA\PM\c AAA BBB BBB BBB .CCC CCC DDD .\" (3) Expected output for (2) (removed \PM) AAA\c AAA BBB BBB BBB .CCC CCC DDD Generated output: AAAAAA BBB BBB BBB BBB .CCC CCC DDD AAAAAA BBB BBB BBB DDD AAAAAA BBB BBB BBB .CCC CCC DDD