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Remove highlighting of spans on -Zteach

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`-Zteach` is perma-unstable, barely used, the highlighting logic buggy and the flag being passed around is tech-debt. We should likely remove `-Zteach` in its entirely.
This commit is contained in:
Esteban Küber 2025-02-27 21:09:45 +00:00
parent 03eb454523
commit d975bd3a67
3 changed files with 0 additions and 13 deletions
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compiler/rustc_session/src/session.rs
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@ -930,7 +930,6 @@ fn default_emitter(
.fluent_bundle(bundle)
.sm(source_map)
.short_message(short)
.teach(sopts.unstable_opts.teach)
.diagnostic_width(sopts.diagnostic_width)
.macro_backtrace(macro_backtrace)
.track_diagnostics(track_diagnostics)