diff --git a/runtime/syntax/arduino.yaml b/runtime/syntax/arduino.yaml
index 35a0480f5f..47c97efb16 100644
--- a/runtime/syntax/arduino.yaml
+++ b/runtime/syntax/arduino.yaml
@@ -67,11 +67,21 @@ rules:
     - identifier: "\\b(setup|loop)\\b"
 
       ##
-    - statement: "^[[:space:]]*#[[:space:]]*(define|include(_next)?|(un|ifn?)def|endif|el(if|se)|if|warning|error|pragma)"
+    - statement: "^[[:space:]]*#[[:space:]]*(define|(un|ifn?)def|endif|el(if|se)|if|warning|error|pragma)"
 
       ## GCC builtins
     - constant: "(__attribute__[[:space:]]*\\(\\([^)]*\\)\\)|__(aligned|asm|builtin|hidden|inline|packed|restrict|section|typeof|weak)__)"
 
+      # #include lines are a region so that the header name (e.g. <float.h>)
+      # is not matched by the type rules above
+    - statement:
+        start: "^[[:space:]]*#[[:space:]]*include(_next)?\\b"
+        end: "$"
+        rules:
+            - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
+            - constant.string: "<[^>]*>|\"[^\"]*\""
+            - comment: "//.*|/\\*.*?\\*/"
+
     - constant.string:
         start: "\""
         end: "\""
diff --git a/runtime/syntax/c.yaml b/runtime/syntax/c.yaml
index c6a46741ea..b816eac8a7 100644
--- a/runtime/syntax/c.yaml
+++ b/runtime/syntax/c.yaml
@@ -14,7 +14,7 @@ rules:
     - statement: "\\b(for|if|while|do|else|case|default|switch|_Generic|_Static_assert|static_assert)\\b"
     - statement: "\\b(goto|continue|break|return)\\b"
     - statement: "\\b(asm|fortran)\\b"
-    - preproc: "^[[:space:]]*#[[:space:]]*(define|embed|pragma|include|(un|ifn?)def|endif|el(if|ifdef|ifndef|se)|if|line|warning|error|__has_include|__has_embed|__has_c_attribute)"
+    - preproc: "^[[:space:]]*#[[:space:]]*(define|embed|pragma|(un|ifn?)def|endif|el(if|ifdef|ifndef|se)|if|line|warning|error|__has_include|__has_embed|__has_c_attribute)"
     - preproc: "^[[:space:]]*_Pragma\\b"
       # GCC builtins
     - statement: "__attribute__[[:space:]]*\\(\\([^)]*\\)\\)"
@@ -30,6 +30,16 @@ rules:
     - constant.number: "(\\b0[Xx]([0-9A-Za-z]*[.][0-9A-Za-z]+|[0-9A-Za-z]+[.][0-9A-Za-z]*)[Pp][+-]?[0-9]+[FfLl]?\\b)"
     - constant.bool: "(\\b(true|false|NULL|nullptr|TRUE|FALSE)\\b)"
 
+      # #include lines are a region so that the header name (e.g. <float.h>)
+      # is not matched by the type rules above
+    - preproc:
+        start: "^[[:space:]]*#[[:space:]]*include(_next)?\\b"
+        end: "$"
+        rules:
+            - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
+            - constant.string: "<[^>]*>|\"[^\"]*\""
+            - comment: "//.*|/\\*.*?\\*/"
+
     - constant.string:
         start: "\""
         end: "\""
diff --git a/runtime/syntax/cpp.yaml b/runtime/syntax/cpp.yaml
index edd09c6087..d11de21f05 100644
--- a/runtime/syntax/cpp.yaml
+++ b/runtime/syntax/cpp.yaml
@@ -17,7 +17,7 @@ rules:
     - statement: "\\b(for|if|while|do|else|case|default|switch)\\b"
     - statement: "\\b(try|throw|catch|operator|new|delete|static_assert)\\b"
     - statement: "\\b(goto|continue|break|return)\\b"
-    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|include|(un|ifn?)def|endif|el(if|se)|if|warning|error)|_Pragma"
+    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|(un|ifn?)def|endif|el(if|se)|if|warning|error)|_Pragma"
 
       # Conditionally-supported/extension keywords
     - statement: "\\b(asm|fortran)\\b"
@@ -61,6 +61,16 @@ rules:
 
     - constant.bool: "(\\b(true|false|NULL|nullptr|TRUE|FALSE)\\b)"
 
+      # #include lines are a region so that the header name (e.g. <float.h>)
+      # is not matched by the type rules above
+    - preproc:
+        start: "^[[:space:]]*#[[:space:]]*include(_next)?\\b"
+        end: "$"
+        rules:
+            - identifier: "\\b[A-Z_][0-9A-Z_]*\\b"
+            - constant.string: "<[^>]*>|\"[^\"]*\""
+            - comment: "//.*|/\\*.*?\\*/"
+
     - constant.string:
         start: "\""
         end: "\""
diff --git a/runtime/syntax/cuda.yaml b/runtime/syntax/cuda.yaml
index 6875b1ef5a..b86e6e6de0 100644
--- a/runtime/syntax/cuda.yaml
+++ b/runtime/syntax/cuda.yaml
@@ -16,7 +16,7 @@ rules:
     - statement: "\\b(for|if|while|do|else|case|default|switch)\\b"
     - statement: "\\b(try|throw|catch|operator|new|delete|static_assert)\\b"
     - statement: "\\b(goto|continue|break|return)\\b"
-    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|include|(un|ifn?)def|endif|el(if|se)|if|warning|error)|_Pragma"
+    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|(un|ifn?)def|endif|el(if|se)|if|warning|error)|_Pragma"
 
       # Conditionally-supported/extension keywords
     - statement: "\\b(asm|fortran)\\b"
@@ -39,6 +39,16 @@ rules:
     - constant.number: "(\\b0[Xx]([0-9a-zA-Z']*[.][0-9a-zA-Z']+|[0-9a-zA-Z']+[.][0-9a-zA-Z']*)[Pp][+-]?[0-9']+[FfLl]?\\b)"
     - constant.bool: "(\\b(true|false|NULL|nullptr)\\b)"
 
+      # #include lines are a region so that the header name (e.g. <float.h>)
+      # is not matched by the type rules above
+    - preproc:
+        start: "^[[:space:]]*#[[:space:]]*include(_next)?\\b"
+        end: "$"
+        rules:
+            - identifier: "\\b[A-Z_][0-9A-Z_]*\\b"
+            - constant.string: "<[^>]*>|\"[^\"]*\""
+            - comment: "//.*|/\\*.*?\\*/"
+
     - constant.string:
         start: "\""
         end: "\""
diff --git a/runtime/syntax/hc.yaml b/runtime/syntax/hc.yaml
index 9b94b0cd25..6a91b3b17c 100644
--- a/runtime/syntax/hc.yaml
+++ b/runtime/syntax/hc.yaml
@@ -9,7 +9,7 @@ rules:
 
     - statement: "\\b(for|if|while|do|else|case|default|switch)\\b"
     - statement: "\\b(try|catch|throw|goto|continue|break|return)\\b"
-    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|include|(un|ifn?)def|endif|el(if|se)|if|help_index|ifjit|ifaot|exe)"
+    - preproc: "^[[:space:]]*#[[:space:]]*(define|pragma|(un|ifn?)def|endif|el(if|se)|if|help_index|ifjit|ifaot|exe)"
 
       # Operator Color
     - symbol.operator: "([.:;,+*|=!\\%]|<|>|/|-|&)"
@@ -24,6 +24,16 @@ rules:
     - constant.number: "TRUE"
     - constant.number: "FALSE"
 
+      # #include lines are a region so that the header name (e.g. <float.h>)
+      # is not matched by the type rules above
+    - preproc:
+        start: "^[[:space:]]*#[[:space:]]*include(_next)?\\b"
+        end: "$"
+        rules:
+            - identifier: "\\b[A-Z_][0-9A-Z_]+\\b"
+            - constant.string: "<[^>]*>|\"[^\"]*\""
+            - comment: "//.*|/\\*.*?\\*/"
+
     - constant.string:
         start: "\""
         end: "\""
diff --git a/runtime/syntax/objc.yaml b/runtime/syntax/objc.yaml
index d4cccac317..111553595d 100644
--- a/runtime/syntax/objc.yaml
+++ b/runtime/syntax/objc.yaml
@@ -19,11 +19,9 @@ rules:
     - statement: "\\b(nonatomic|atomic|readonly|readwrite|strong|weak|assign)\\b"
     - statement: "@(encode|end|interface|implementation|class|selector|protocol|synchronized|try|catch|finally|property|optional|required|import|autoreleasepool)"
 
-    - preproc: "^[[:space:]]*#[[:space:]]*(define|include|import|(un|ifn?)def|endif|el(if|se)|if|warning|error|pragma).*$"
+    - preproc: "^[[:space:]]*#[[:space:]]*(define|(un|ifn?)def|endif|el(if|se)|if|warning|error|pragma).*$"
     - preproc: "__[A-Z0-9_]*__"
 
-    - special: "^[[:space:]]*[#|@][[:space:]]*(import|include)[[:space:]]*[\"|<].*\\/?[>|\"][[:space:]]*$"
-
     - statement: "([.:;,+*|=!\\%\\[\\]]|<|>|/|-|&)"
 
     - constant.number: "(\\b(-?)?[0-9]+\\b|\\b\\[0-9]+\\.[0-9]+\\b|\\b0x[0-9a-fA-F]+\\b)"
@@ -33,6 +31,15 @@ rules:
     - constant: "\\bk[[:alnum]]*\\b"
     - constant.string: "'.'"
 
+      # #include lines are a region so that the header name (e.g. <float.h>)
+      # is not matched by the type rules above
+    - special:
+        start: "^[[:space:]]*#[[:space:]]*(include(_next)?|import)\\b"
+        end: "$"
+        rules:
+            - constant.string: "<[^>]*>|\"[^\"]*\""
+            - comment: "//.*|/\\*.*?\\*/"
+
     - constant.string:
         start: "@\""
         end: "\""