Third-review fix for a CI blocker: run-platform-coverage-gate.sh only
executes ^(TestAllShortcuts|TestCrossPlatformCoverage) yet enforces 100%
coverage of changed production lines, so the TestResolveInputFlags names
left every new input.go statement reported as uncovered. Rename them to
the gate prefix, drop three unreachable pflag Set error branches that no
test could ever cover, and add the reachable stdin read-failure case.
Verified: changed code coverage 100.0000% (67 statements).
Second-review fix: explicitInputFlagName judged usability with an
unconditional TrimSpace while rawValue only trims when Trim is set. For
a non-Trim flag a whitespace main value is usable and shadows a changed
alias; the resolver could then rewrite the shadowed alias (and fail on
its @path) while the fallback chain still read the main value. Mirror
rawValue's usable() exactly and pin the shadow case with a regression
test whose alias path does not exist.
Self-review fixes: a Trim flag receiving " @path" judged usability on the
trimmed value (rawValue) while the source prefix check saw the raw value,
so the token would ship as a literal. Trim before the prefix check. Also
build the file-read error once with a conditional hint option, and pin
the default-value/env passthrough plus Trim edge with regression tests.
Port the lark-cli Flag.Input capability: a KindString flag may declare
Input sources ("file" for @path, "stdin" for -) and the framework
rewrites the explicit token into the payload content before
required/enum/constraint/Validate checks. @@value escapes to a literal
@value; a single stdin consumer per invocation is enforced; a leading
UTF-8 BOM is stripped. Shortcut.Flag gains the same declaration and the
adapter maps it through; LeafSpec inherits it via the LeafFlag alias.
玉澜