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XML parse failures and mojibake usually mean the BOM, the encoding declaration, and the actual bytes disagree. A diagnostic guide: detection order, a cause table, ordered checks, and matched fixes.
A concise decision guide for when to use Dyalog’s built‑in ⎕JSON facility versus manual JSON conversion in APL code.
A SWI-Prolog codebase loads and runs correctly on development machines, but on the production host the same files fail with syntax errors or produce silently wrong atoms. The working hypothesis is character encoding: the files are saved as UTF-8, while the server locale differs from the workstation locale, so the byte stream is misread before parsing and the
The goal is a repeatable development environment: one set of CSV-export scripts that runs unchanged under Windows PowerShell 5.1 and PowerShell 7.x, on both Windows and Linux agents, producing artifacts that downstream consumers decode identically on every run. The friction point is Export-Csv's default encoding. Windows PowerShell 5.1 writes UTF-16LE with a
apl
dyalog
prolog