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36d75898a0
Phase 2 of plans/exit.md: the FlagParser signature change.
- FlagParser gains an error return; all 259 inline parser closures in
option_parse.go and NoOpParse1 updated (mechanical rewrite, compiler-checked).
- FlagTable.Parse returns (bool, error); its nine callers (climain passes one
and two, .mlrrc line handling, verb-local flag parsing in tee/join/put/
filter/split, and the repl/script terminals) propagate the error instead of
letting parsers kill the process.
- cli.CheckArgCount returns its missing-argument message as an error rather
than printing and exiting; new cli.FlagErrorf (counterpart of VerbErrorf)
carries user-facing main-flag messages.
- The 14 print-and-exit sites inside parser closures become returned errors;
--list-color-codes/--list-color-names return ExitRequest{0} after printing.
- The repl and script terminals translate ExitRequest into their int return
codes, so 'mlr repl --list-color-codes' still exits 0.
- pkg/cli is now os.Exit-free; stale comments about exiting parsers updated
(the completion introspection accessors remain, since parsers mutate the
options struct).
Stderr messages and exit codes are byte-identical, including the two-line
missing-argument and --seed messages and the trailing-period forms pinned by
test/cases/cli-mfrom/0003.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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| terminals.go | ||