Fix: LSP crash when editing code fences (#493)

Co-authored-by: Tillman Jex <[email protected]>
Fixes issue 461: #461

Author: dandeandean

internal/adapter/lsp/document.go

@@ -213,10 +213,18 @@ var insideFenced = false
 var insideIndented = false
 var currentCodeBlockStart = -1
 
-// check whether the current line in document is within a fenced or indented 
+// check whether the current line in document is within a fenced or indented
 // code block
 func isLineWithinCodeBlock(lines []string, lineIndex int, line string) bool {
-    // if line is already within code fences or indented code block
+	// Reset global state from previous runs
+	if lineIndex == 0 {
+		insideInline = false
+		insideFenced = false
+		insideIndented = false
+		currentCodeBlockStart = -1
+	}
+
+	// if line is already within code fences or indented code block
 	if insideFenced {
 		if fencedEndRegex.FindStringIndex(line) != nil &&
 			lines[currentCodeBlockStart][:3] == line[:3] {