The discovery envelope is remote data, but four of its shapes were
forwarded to pflag registration calls that panic:
- a flag named 'params' or 'json' collides with the reserved payload
flags registered at the end of ApplyBindings (the original pre-1.0.32
lockout: "chat_permission_grant flag redefined: params")
- two bindings resolving to the same long flag name (cross-binding
duplicate primary/alias; the existing dedup map was per-binding only)
- two flags claiming the same shorthand
- a multi-character shorthand
Because the command tree is built from the cached envelope before Cobra
dispatches anything, any of these aborted every CLI invocation.
Add canRegisterFlag (skip duplicate/reserved long names; CollectBindings
already tolerates missing flags via Lookup→nil→continue, and the value
stays reachable through --params) and safeShorthand (drop invalid or
taken shorthands, keep the long flag) and apply them at every
envelope-driven registration site in ApplyBindings and
registerPositionalAliasFlags. The trailing --json/--params registration
is also made idempotent.
Complements #447: that PR adds the escape hatch when the build panics;
this removes the known panic vectors so the escape hatch should never
be needed for them.
修雨
838e5453d8