Fix tasks in tasks.json #16839 refactored the representation of tasks inside the VS Code extension. However, this data type is exposed to users, who can define their own tasks in the same format in `tasks.json` or `.code-workspace`. Revert the data type to have a `command` field rather than a `program` field, and document the different fields. This code is also a little complex, so split out a `cargoToExecution` to handle the Task to Execution conversion logic. After this change, any tasks.json with a `command` field works again. For example, the following tasks.json works as expected: ``` { "version": "2.0.0", "tasks": [ { "type": "cargo", "command": "build", "problemMatcher": [ "$rustc" ], "group": "build", "label": "my example cargo build task" } ] } ``` Fixes #16943 #16949
rust-analyzer is a modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust.
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