tree 1826ae7b2ed95673832d95579fd3330eaaac3368
parent e92d9202699b36c59ec644528833a7b27b14a085
parent 7f7045f84795a7e1c1fb0a0160bf3319368c09ba
author Pietro Albini <pietro@pietroalbini.org> 1544881654 +0100
committer GitHub <noreply@github.com> 1544881654 +0100
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Rollup merge of #56679 - euclio:external-doc-parse, r=estebank

overhaul external doc attribute diagnostics

This PR improves the error handling and spans for the external doc attribute. Many cases that silently failed before now emit errors, spans are tightened, and the errors have help and suggestions.

I tried to address all the cases that users ran into in the tracking issue.

cc #44732

r? @QuietMisdreavus