fixed bash-for-windows

internal/shell/control.go

@@ -21,17 +21,40 @@ func (s *Shell) executeIf(block string) error {
 	phase := "if_cond"
 	var curCond []string
 	var curBody []string
+	depth := 0 // nesting depth of if/for/while/until/case inside the body
+
+	addToBody := func(s string) {
+		switch phase {
+		case "body":
+			curBody = append(curBody, s)
+		case "else":
+			elseBody = append(elseBody, s)
+		}
+	}
 
 	for _, stmt := range stmts {
 		w := firstWord(stmt)
 		rest := afterWord(stmt)
 
+		// When depth > 0, we're inside a nested block; all keywords are body content.
+		if depth > 0 {
+			switch w {
+			case "if", "for", "while", "until", "case":
+				depth++
+			case "fi", "done", "esac":
+				depth--
+			}
+			addToBody(stmt)
+			continue
+		}
+
+		// depth == 0: structural keywords for the outer if
 		switch {
 		case w == "if" && phase == "if_cond":
 			if rest != "" {
 				curCond = append(curCond, rest)
 			}
-		case w == "then":
+		case w == "then" && (phase == "if_cond" || phase == "elif_cond"):
 			if rest != "" {
 				curBody = append(curBody, rest)
 			}
@@ -67,8 +90,17 @@ func (s *Shell) executeIf(block string) error {
 				curCond = append(curCond, stmt)
 			case "body":
 				curBody = append(curBody, stmt)
+				// Track depth for nested blocks starting in body
+				switch w {
+				case "if", "for", "while", "until", "case":
+					depth++
+				}
 			case "else":
 				elseBody = append(elseBody, stmt)
+				switch w {
+				case "if", "for", "while", "until", "case":
+					depth++
+				}
 			}
 		}
 	}