[314TeR]

The help text (0.10) says /-Y "Causes prompting to confirm you want to overwrite an existing destination file", which is also how COPYCMD=/-Y works in MS-DOS and in FreeCOM's COPY. In move.c both map to SKIP:

• move.c:601-613 - COPYCMD=/-Y (and /N) -> opt_prompt = SKIP
• move.c:635-636 - option /-Y -> opt_prompt = SKIP

FreeDOS sets COPYCMD=/-Y in FDAUTO.BAT, so on a default installation MOVE never asks: it prints " [File already exists]" and skips, while COPY asks. Found while testing the Polish translation (the overwrite prompt never appeared).

While there: strncpy(environ, getenv("COPYCMD"), ...) has no NULL check, so with COPYCMD unset it reads from address 0, and the copy is not terminated if the value is 255+ chars.

This PR:

• /-Y (option and COPYCMD) -> ASK (prompt), as documented;
• COPYCMD=/N stays SKIP, /Y stays OVERWRITE;
• getenv result checked, copy always terminated.

Tested on FreeDOS T2610 (QEMU), built with Open Watcom 2.0 (build.bat flags), Polish NLS:

Case	Before	After
default (COPYCMD=/-Y from FDAUTO)	skipped, " [File already exists]"	prompt; N keeps the target
/Y	overwrite	overwrite
COPYCMD=/Y	overwrite	overwrite
COPYCMD=/N	skip	skip
COPYCMD unset	prompt	prompt; None skips
COPYCMD=/Y + option /-Y	skip	prompt; All moves