diff --git a/runtime/queries/c/injections.scm b/runtime/queries/c/injections.scm
index 24634864..ebedc1ec 100644
--- a/runtime/queries/c/injections.scm
+++ b/runtime/queries/c/injections.scm
@@ -9,7 +9,7 @@
   (#set! injection.language "re2c"))
 
 ((comment) @injection.content
-  (#lua-match? @injection.content "/[*\/][!*\/]<?[^a-zA-Z]")
+  (#lua-match? @injection.content "/[*/][!*/]<?[^a-zA-Z]")
   (#set! injection.language "doxygen"))
 
 ((call_expression
diff --git a/runtime/queries/cpp/injections.scm b/runtime/queries/cpp/injections.scm
index 1fbc8e13..795e4061 100644
--- a/runtime/queries/cpp/injections.scm
+++ b/runtime/queries/cpp/injections.scm
@@ -1,7 +1,7 @@
 ; inherits: c
 
 ((comment) @injection.content
-  (#lua-match? @injection.content "/[*\/][!*\/]<?[^a-zA-Z]")
+  (#lua-match? @injection.content "/[*/][!*/]<?[^a-zA-Z]")
   (#set! injection.language "doxygen"))
 
 (raw_string_literal
diff --git a/runtime/queries/fsharp/highlights.scm b/runtime/queries/fsharp/highlights.scm
index e400e352..72168528 100644
--- a/runtime/queries/fsharp/highlights.scm
+++ b/runtime/queries/fsharp/highlights.scm
@@ -123,7 +123,7 @@
 ((argument_patterns
   (long_identifier
     (identifier) @character.special))
-  (#lua-match? @character.special "^\_.*"))
+  (#lua-match? @character.special "^_.*"))
 
 (member_defn
   (method_or_prop_defn
diff --git a/runtime/queries/idl/injections.scm b/runtime/queries/idl/injections.scm
index e4a286e4..e444fc48 100644
--- a/runtime/queries/idl/injections.scm
+++ b/runtime/queries/idl/injections.scm
@@ -1,8 +1,8 @@
 ((comment) @injection.content
-  (#lua-match? @injection.content "/[*\/][!*\/]<?[^a-zA-Z]")
+  (#lua-match? @injection.content "/[*/][!*/]<?[^a-zA-Z]")
   (#set! injection.language "doxygen"))
 
 ((comment) @injection.content
-  (#not-lua-match? @injection.content "/[*\/][!*\/]<?[^a-zA-Z]")
+  (#not-lua-match? @injection.content "/[*/][!*/]<?[^a-zA-Z]")
   (#not-lua-match? @injection.content "//@[a-zA-Z]")
   (#set! injection.language "comment"))
diff --git a/runtime/queries/powershell/highlights.scm b/runtime/queries/powershell/highlights.scm
index 6081e8f1..7d334ba2 100644
--- a/runtime/queries/powershell/highlights.scm
+++ b/runtime/queries/powershell/highlights.scm
@@ -142,7 +142,7 @@
     "$true"))
 
 ((variable) @variable.builtin
-  (#lua-match? @variable.builtin "^\$env:"))
+  (#lua-match? @variable.builtin "^$env:"))
 
 (data_name
   (simple_name) @constant)
diff --git a/runtime/queries/sql/highlights.scm b/runtime/queries/sql/highlights.scm
index 67eef18a..6b4b7026 100644
--- a/runtime/queries/sql/highlights.scm
+++ b/runtime/queries/sql/highlights.scm
@@ -42,7 +42,7 @@
   (#lua-match? @number "^%d+$"))
 
 ((literal) @number.float
-  (#lua-match? @number.float "^[-]?%d*\.%d*$"))
+  (#lua-match? @number.float "^[-]?%d*%.%d*$"))
 
 (parameter) @variable.parameter
 
diff --git a/runtime/queries/systemtap/highlights.scm b/runtime/queries/systemtap/highlights.scm
index d1348dc9..f3484abd 100644
--- a/runtime/queries/systemtap/highlights.scm
+++ b/runtime/queries/systemtap/highlights.scm
@@ -43,7 +43,7 @@
     "sprintln"))
 
 ((identifier) @variable.builtin
-  (#lua-match? @variable.builtin "^\$+[0-9A-Z_a-z]+\$*$"))
+  (#lua-match? @variable.builtin "^$+[0-9A-Z_a-z]+$*$"))
 
 (shebang_line) @keyword.directive