Resetting Folder.current for the next run of a named engine now drops the
last run's uncaught exception and $.error first, so memory only they held
no longer makes the reset fail with the heap limit on every later run.
A File an earlier run left open now counts as closed in a later run:
setting its encoding stores it for the next open, and reading the encoding
gives the stored one.
docs/mcp.md: engines stay on the thread that made them, and a
#targetengine line in a file $.evalFile runs makes that call throw a
SyntaxError when it runs.
Scripts get the File and Folder classes as built-ins of the script
engine. A script run from a file can test whether files exist, read
their properties, list folders with getFiles (a mask or a function),
and open files to read them with read, readln, readch, seek and tell.
- Reads stay inside the script's folder and, when automation read
roots are set, inside them too. A script given as text reads no
files. Network and device paths, and paths outside the folder by
their names, are refused before anything is looked up. Links and
junctions that lead out are refused, and getFiles leaves them out.
- The encoding comes from the byte order mark, then the encoding the
script set, then UTF-8 when the bytes are valid, then CP1252.
- Limits: 8 MiB a file, 32 MiB a run, 256 files open at once, 2,048
getFiles entries and 65,536 names looked at, and paths of at most
32,767 characters.
- Writing, the file dialogs and execute are not available yet: they
return false or null and set error.
The report's hostCallCounts gains fileCalls and fileExecutes.
Docs: docs/mcp.md, docs/target-app-parity.md.
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