clangd tests: use extended regex with sed

The escaped parens seem to confuse the combination of lit, cygwin
quoting, and cygwin's sed. unxutils sed in cmd.exe is fine with both
forms, so use the extended regex form that doesn't need an escaped
paren.

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@374753 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/clangd/test/compile-commands-path-in-initialize.test b/clangd/test/compile-commands-path-in-initialize.test
index 2905bad..034299d 100644
--- a/clangd/test/compile-commands-path-in-initialize.test
+++ b/clangd/test/compile-commands-path-in-initialize.test
@@ -10,7 +10,7 @@
 
 # On Windows, we need the URI in didOpen to look like "uri":"file:///C:/..."
 # (with the extra slash in the front), so we add it here.
-# RUN: sed -e "s|file://\([A-Z]\):/|file:///\1:/|g" %t.test.1 > %t.test
+# RUN: sed -E -e "s|file://([A-Z]):/|file:///\1:/|g" %t.test.1 > %t.test
 
 # RUN: clangd -lit-test < %t.test | FileCheck -strict-whitespace %t.test
 
diff --git a/clangd/test/system-include-extractor.test b/clangd/test/system-include-extractor.test
index 431384d..b61ad7a 100644
--- a/clangd/test/system-include-extractor.test
+++ b/clangd/test/system-include-extractor.test
@@ -27,7 +27,7 @@
 # RUN: sed -e "s|INPUT_DIR|%/t.dir|g" %s > %t.test.1
 # On Windows, we need the URI in didOpen to look like "uri":"file:///C:/..."
 # (with the extra slash in the front), so we add it here.
-# RUN: sed -e "s|file://\([A-Z]\):/|file:///\1:/|g" %t.test.1 > %t.test
+# RUN: sed -E -e "s|file://([A-Z]):/|file:///\1:/|g" %t.test.1 > %t.test
 
 # Bless the mock driver we've just created so that clangd can execute it.
 # RUN: clangd -lit-test -query-driver="**.test,**.sh" < %t.test | FileCheck -strict-whitespace %t.test
diff --git a/clangd/test/target_info.test b/clangd/test/target_info.test
index 1e0cb99..ae45c34 100644
--- a/clangd/test/target_info.test
+++ b/clangd/test/target_info.test
@@ -9,7 +9,7 @@
 # RUN: sed -e "s|INPUT_DIR|%/t.dir|g" %s > %t.test.1
 # On Windows, we need the URI in didOpen to look like "uri":"file:///C:/..."
 # (with the extra slash in the front), so we add it here.
-# RUN: sed -e "s|file://\([A-Z]\):/|file:///\1:/|g" %t.test.1 > %t.test
+# RUN: sed -E -e "s|file://([A-Z]):/|file:///\1:/|g" %t.test.1 > %t.test
 
 # RUN: clangd -lit-test < %t.test 2>&1 | FileCheck -strict-whitespace %t.test
 {"jsonrpc":"2.0","id":0,"method":"initialize","params":{}}