diff --git a/clang/test/ExtractAPI/enum.c b/clang/test/ExtractAPI/enum.c
--- a/clang/test/ExtractAPI/enum.c
+++ b/clang/test/ExtractAPI/enum.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api -target arm64-apple-macosx \
 // RUN: %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/global_record.c b/clang/test/ExtractAPI/global_record.c
--- a/clang/test/ExtractAPI/global_record.c
+++ b/clang/test/ExtractAPI/global_record.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=GlobalRecord -target arm64-apple-macosx \
 // RUN: %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/global_record_multifile.c b/clang/test/ExtractAPI/global_record_multifile.c
--- a/clang/test/ExtractAPI/global_record_multifile.c
+++ b/clang/test/ExtractAPI/global_record_multifile.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=GlobalRecord -target arm64-apple-macosx \
 // RUN: %t/input1.h %t/input2.h %t/input3.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/known_files_only.c b/clang/test/ExtractAPI/known_files_only.c
--- a/clang/test/ExtractAPI/known_files_only.c
+++ b/clang/test/ExtractAPI/known_files_only.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=GlobalRecord -target arm64-apple-macosx \
 // RUN: %t/input1.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/known_files_only_hmap.c b/clang/test/ExtractAPI/known_files_only_hmap.c
--- a/clang/test/ExtractAPI/known_files_only_hmap.c
+++ b/clang/test/ExtractAPI/known_files_only_hmap.c
@@ -1,9 +1,9 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/known_files_only.hmap.json.in >> \
-// RUN: %t/known_files_only.hmap.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/known_files_only.hmap.json.in >> %t/known_files_only.hmap.json
 // RUN: %hmaptool write %t/known_files_only.hmap.json %t/known_files_only.hmap
 // RUN: %clang -extract-api --product-name=KnownFilesOnlyHmap -target arm64-apple-macosx \
 // RUN: -I%t/known_files_only.hmap -I%t/subdir %t/subdir/subdir1/input.h \
diff --git a/clang/test/ExtractAPI/language.c b/clang/test/ExtractAPI/language.c
--- a/clang/test/ExtractAPI/language.c
+++ b/clang/test/ExtractAPI/language.c
@@ -1,9 +1,9 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/c.reference.output.json.in >> \
-// RUN: %t/c.reference.output.json
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/objc.reference.output.json.in >> \
-// RUN: %t/objc.reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/c.reference.output.json.in >> %t/c.reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/objc.reference.output.json.in >> %t/objc.reference.output.json
 
 // RUN: %clang -extract-api -x c-header -target arm64-apple-macosx \
 // RUN: %t/c.h -o %t/c.output.json | FileCheck -allow-empty %s
diff --git a/clang/test/ExtractAPI/macro_undefined.c b/clang/test/ExtractAPI/macro_undefined.c
--- a/clang/test/ExtractAPI/macro_undefined.c
+++ b/clang/test/ExtractAPI/macro_undefined.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=Macros -target arm64-apple-macosx \
 // RUN: -x objective-c-header %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/macros.c b/clang/test/ExtractAPI/macros.c
--- a/clang/test/ExtractAPI/macros.c
+++ b/clang/test/ExtractAPI/macros.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=Macros -target arm64-apple-macosx \
 // RUN: -x objective-c-header %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/objc_category.m b/clang/test/ExtractAPI/objc_category.m
--- a/clang/test/ExtractAPI/objc_category.m
+++ b/clang/test/ExtractAPI/objc_category.m
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api -x objective-c-header -target arm64-apple-macosx \
 // RUN: %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/objc_interface.m b/clang/test/ExtractAPI/objc_interface.m
--- a/clang/test/ExtractAPI/objc_interface.m
+++ b/clang/test/ExtractAPI/objc_interface.m
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api -x objective-c-header -target arm64-apple-macosx \
 // RUN: %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/objc_protocol.m b/clang/test/ExtractAPI/objc_protocol.m
--- a/clang/test/ExtractAPI/objc_protocol.m
+++ b/clang/test/ExtractAPI/objc_protocol.m
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api -x objective-c-header -target arm64-apple-macosx \
 // RUN: %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/struct.c b/clang/test/ExtractAPI/struct.c
--- a/clang/test/ExtractAPI/struct.c
+++ b/clang/test/ExtractAPI/struct.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api -target arm64-apple-macosx \
 // RUN: %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/typedef.c b/clang/test/ExtractAPI/typedef.c
--- a/clang/test/ExtractAPI/typedef.c
+++ b/clang/test/ExtractAPI/typedef.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=Typedef -target arm64-apple-macosx \
 // RUN: -x objective-c-header %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/typedef_anonymous_record.c b/clang/test/ExtractAPI/typedef_anonymous_record.c
--- a/clang/test/ExtractAPI/typedef_anonymous_record.c
+++ b/clang/test/ExtractAPI/typedef_anonymous_record.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=TypedefChain -target arm64-apple-macosx \
 // RUN: -x objective-c-header %t/input.h -o %t/output.json | FileCheck -allow-empty %s
 
diff --git a/clang/test/ExtractAPI/typedef_chain.c b/clang/test/ExtractAPI/typedef_chain.c
--- a/clang/test/ExtractAPI/typedef_chain.c
+++ b/clang/test/ExtractAPI/typedef_chain.c
@@ -1,7 +1,7 @@
 // RUN: rm -rf %t
 // RUN: split-file %s %t
-// RUN: sed -e "s@INPUT_DIR@%/t@g" %t/reference.output.json.in >> \
-// RUN: %t/reference.output.json
+// RUN: sed -e "s@INPUT_DIR@%{/t:regex_replacement}@g" \
+// RUN: %t/reference.output.json.in >> %t/reference.output.json
 // RUN: %clang -extract-api --product-name=TypedefChain -target arm64-apple-macosx \
 // RUN: -x objective-c-header %t/input.h -o %t/output.json | FileCheck -allow-empty %s