Add a hacky shell for fun code reading (#17503)

scripts/sed-i-all-rs-files-for-rust-analyzer.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+set -e
+
+# rust-analyzer doesn't support hiding noisy test calls in the call hierarchy from tests/benches
+# so, here's some wild hack from ryoqun!
+
+if [[ $1 = "doit" ]]; then
+  # it's true that we put true just for truely-aligned lines
+  # shellcheck disable=SC2046 # our rust files are sanely named with no need to escape
+  true &&
+    sed -i -e 's/#\[cfg(test)\]/#[cfg(escaped-cfg-test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[bench\]/#[cfg(escaped-bench)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[test\]/#[cfg(escaped-test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[tokio::test\]/#[cfg(escaped-tokio-test)]/g' $(git ls-files :**.rs :^**/build.rs)
+elif [[ $1 = "undoit" ]]; then
+  # shellcheck disable=SC2046 # our rust files are sanely named with no need to escape
+  true &&
+    sed -i -e 's/#\[cfg(escaped-cfg-test)\]/#[cfg(test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[cfg(escaped-bench)\]/#[bench]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[cfg(escaped-test)\]/#[test]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[cfg(escaped-tokio-test)\]/#[tokio::test]/g' $(git ls-files :**.rs :^**/build.rs)
+else
+  echo "usage: $0 [doit|undoit]" > /dev/stderr
+  exit 1
+fi