I think the question is OK as is.
But if you want to make it even better: make it more general so it will be useful to others, and be more general. You might try recasting the question as something like:
"Code completion isn't working for me in Delphi's IDE with my project. Nothing I've tried has gotten it working again. Eyeballing my code, I can't see anything wrong. What should I try, to diagnose the cause and get it working again?"
Try to make the question match what someone who is experiencing the symptoms and who is puzzled would ask. Then, provide an answer that describes the debugging/diagnosis pattern that people should follow. The answer might be something like:
"First try creating a new project with a trivial one-line program. Does code completion with the new project, but fail for your original project? If yes, it's something project-specific. In that case, check the line endings: mixed line endings screws up Delphi's code completion. Try converting the line endings to Unix-style using dos2unix. That will force them to all use the same line ending style, and Delphi's code completion might start working again."
or something like that. You can probably make the question and answer better; I'm just trying to sketch the outline of something that will be discoverable by search and be useful to others who are in this position.
(Bonus points if you generalize the answer to identify other common problems or other things that people should check, if it's not the line-endings.)
There's nothing wrong with answering your own question, as long as the question is posed in a reasonable way.