Add docs for error_format (#924)

Author: djmarcin

docs/BUILD.bazel

@@ -59,6 +59,7 @@ PAGES = dict([
             "rust_benchmark",
             "rust_test",
             "rust_test_suite",
+            "error_format",
             "extra_rustc_flags",
         ],
     ),

docs/defs.md

@@ -9,8 +9,27 @@
 * [rust_benchmark](#rust_benchmark)
 * [rust_test](#rust_test)
 * [rust_test_suite](#rust_test_suite)
+* [error_format](#error_format)
 * [extra_rustc_flags](#extra_rustc_flags)
 
+<a id="#error_format"></a>
+
+## error_format
+
+<pre>
+error_format(<a href="#error_format-name">name</a>)
+</pre>
+
+Change the [--error-format](https://doc.rust-lang.org/rustc/command-line-arguments.html#option-error-format) flag from the command line with `--@rules_rust//:error_format`. See rustc documentation for valid values.
+
+**ATTRIBUTES**
+
+
+| Name  | Description | Type | Mandatory | Default |
+| :------------- | :------------- | :------------- | :------------- | :------------- |
+| <a id="error_format-name"></a>name |  A unique name for this target.   | <a href="https://bazel.build/docs/build-ref.html#name">Name</a> | required |  |
+
+
 <a id="#extra_rustc_flags"></a>
 
 ## extra_rustc_flags

docs/flatten.md

@@ -7,6 +7,7 @@
 * [cargo_build_script](#cargo_build_script)
 * [crate](#crate)
 * [crate_universe](#crate_universe)
+* [error_format](#error_format)
 * [extra_rustc_flags](#extra_rustc_flags)
 * [fail_when_enabled](#fail_when_enabled)
 * [incompatible_flag](#incompatible_flag)
@@ -118,6 +119,24 @@ Environment Variables:
 | <a id="crate_universe-version"></a>version |  The version of cargo the resolver should use   | String | optional | "1.54.0" |
 
 
+<a id="#error_format"></a>
+
+## error_format
+
+<pre>
+error_format(<a href="#error_format-name">name</a>)
+</pre>
+
+Change the [--error-format](https://doc.rust-lang.org/rustc/command-line-arguments.html#option-error-format) flag from the command line with `--@rules_rust//:error_format`. See rustc documentation for valid values.
+
+**ATTRIBUTES**
+
+
+| Name  | Description | Type | Mandatory | Default |
+| :------------- | :------------- | :------------- | :------------- | :------------- |
+| <a id="error_format-name"></a>name |  A unique name for this target.   | <a href="https://bazel.build/docs/build-ref.html#name">Name</a> | required |  |
+
+
 <a id="#extra_rustc_flags"></a>
 
 ## extra_rustc_flags

docs/symbols.bzl

@@ -41,6 +41,7 @@ load(
 )
 load(
     "@rules_rust//rust:defs.bzl",
+    _error_format = "error_format",
     _extra_rustc_flags = "extra_rustc_flags",
     _rust_analyzer = "rust_analyzer",
     _rust_analyzer_aspect = "rust_analyzer_aspect",
@@ -142,6 +143,7 @@ crate = _crate
 rustfmt_aspect = _rustfmt_aspect
 rustfmt_test = _rustfmt_test
 
+error_format = _error_format
 extra_rustc_flags = _extra_rustc_flags
 incompatible_flag = _incompatible_flag
 fail_when_enabled = _fail_when_enabled