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Rollup merge of #86680 - camsteffen:dbg-opt-error, r=petrochenkov

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Improve error for missing -Z with debugging option

Before:
```text
❯ rustc --unpretty=hir
error: Unrecognized option: 'unpretty'
```
After:
```text
❯ rustc --unpretty=hir
error: Unrecognized option: 'unpretty'. Did you mean `-Z unpretty`?
```
This commit is contained in:
Yuki Okushi 2021-07-01 05:20:57 +09:00 • committed by GitHub
commit 56ddef8ab8
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5 changed files with 19 additions and 4 deletions
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1
src/test/ui/invalid-compile-flags/codegen-option-without-group.rs Normal file
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@ -0,0 +1 @@
// compile-flags: --llvm-args

2
src/test/ui/invalid-compile-flags/codegen-option-without-group.stderr Normal file
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@ -0,0 +1,2 @@
error: Unrecognized option: 'llvm-args'. Did you mean `-C llvm-args`?

1
src/test/ui/invalid-compile-flags/debug-option-without-group.rs Normal file
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@ -0,0 +1 @@
// compile-flags: --unpretty=hir

2
src/test/ui/invalid-compile-flags/debug-option-without-group.stderr Normal file
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@ -0,0 +1,2 @@
error: Unrecognized option: 'unpretty'. Did you mean `-Z unpretty`?