Allow automatically detect the rustc-src directory (fixes #3517).

If the configured rustcSource is set to "discover", try to automatically
detect a source from the sysroot rustc directory.

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/user/generated_config.adoc b/docs/user/generated_config.adoc
index 55178c84c..f91e04c31 100644
--- a/docs/user/generated_config.adoc
+++ b/docs/user/generated_config.adoc
@@ -105,7 +105,7 @@
 [[rust-analyzer.runnables.cargoExtraArgs]]rust-analyzer.runnables.cargoExtraArgs (default: `[]`)::
  Additional arguments to be passed to cargo for runnables such as  tests or binaries.\nFor example, it may be `--release`.
 [[rust-analyzer.rustcSource]]rust-analyzer.rustcSource (default: `null`)::
- Path to the rust compiler sources, for usage in rustc_private projects.
+ Path to the rust compiler sources, for usage in rustc_private projects, or "discover"  to try to automatically find it.
 [[rust-analyzer.rustfmt.extraArgs]]rust-analyzer.rustfmt.extraArgs (default: `[]`)::
  Additional arguments to `rustfmt`.
 [[rust-analyzer.rustfmt.overrideCommand]]rust-analyzer.rustfmt.overrideCommand (default: `null`)::