bjoernager/rust
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Display help message when fluent arg was referenced incorrectly

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The fluent argument syntax is a little special and easy to get wrong, so
we emit a small help message when someone gets it wrong.

Example:
```
parser_mismatched_closing_delimiter = mismatched closing delimiter: `${delimiter}`
```
panics with
```
thread 'rustc' panicked at 'Encountered errors while formatting message for `parser_mismatched_closing_delimiter`
help: Argument `delimiter` exists but was not referenced correctly. Try using `{$delimiter}` instead
attr: `None`
args: `FluentArgs([("delimiter", String("}"))])`
errors: `[ResolverError(Reference(Message { id: "delimiter", attribute: None }))]`', compiler/rustc_errors/src/translation.rs:123:21
```
This commit is contained in:
Nilstrieb 2022-11-09 22:37:17 +01:00
parent cc9b259b5e
commit bd3c4fb2f6
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2 changed files with 31 additions and 10 deletions
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3
compiler/rustc_error_messages/src/lib.rs
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@ -30,7 +30,8 @@ use intl_memoizer::concurrent::IntlLangMemoizer;
#[cfg(not(parallel_compiler))]
use intl_memoizer::IntlLangMemoizer;
pub use fluent_bundle::{FluentArgs, FluentError, FluentValue};
pub use fluent_bundle::{self, FluentArgs, FluentError, FluentValue};
pub use unic_langid::{langid, LanguageIdentifier};
// Generates `DEFAULT_LOCALE_RESOURCES` static and `fluent_generated` module.