diff --git a/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRLexer.kt b/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRLexer.kt
index ce531e6..415d997 100644
--- a/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRLexer.kt
+++ b/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRLexer.kt
@@ -140,6 +140,18 @@ class MLIRLexer : LexerBase() {
                 currentOffset++
                 tokenType = MLIRTokenTypes.OPERATOR
             }
+            char == '.' -> {
+                currentOffset++
+                tokenType = when {
+                    currentOffset < endOffset - 1 && buffer[currentOffset] == char && buffer[currentOffset + 1] == char -> {
+                        currentOffset += 2
+                        MLIRTokenTypes.ELLIPSIS
+                    }
+                    else -> {
+                        TokenType.BAD_CHARACTER
+                    }
+                }
+            }
             else -> {
                 currentOffset++
                 tokenType = TokenType.BAD_CHARACTER
diff --git a/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRTokenTypes.kt b/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRTokenTypes.kt
index 33d2efd..2d17b9b 100644
--- a/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRTokenTypes.kt
+++ b/src/main/kotlin/org/komlir/intellijmlirplugin/MLIRTokenTypes.kt
@@ -22,6 +22,7 @@ object MLIRTokenTypes {
     @JvmField val RBRACKET = IElementType("MLIR_RBRACKET", MLIRLanguage)
     @JvmField val LT = IElementType("MLIR_LT", MLIRLanguage)
     @JvmField val GT = IElementType("MLIR_GT", MLIRLanguage)
+    @JvmField val ELLIPSIS = IElementType("MLIR_ELLIPSIS", MLIRLanguage)
 
     object TokenSets {
         @JvmField val identifiers = TokenSet.create(IDENTIFIER, SSA_VALUE, SYMBOL_REF, OPERATION)