Fix invalid indexing

hamishknight · hamishknight · commit 05971641c077 · 2022-05-10T11:31:33.000+01:00
`curIdx` is an index of `astChildren`, not
`children`.
diff --git a/Sources/_StringProcessing/Regex/ASTConversion.swift b/Sources/_StringProcessing/Regex/ASTConversion.swift
@@ -102,7 +102,7 @@ extension AST.Node {
             curIdx = nextIdx
           } else {
             children.append(astChildren[curIdx].dslTreeNode)
-            children.formIndex(after: &curIdx)
+            astChildren.formIndex(after: &curIdx)
           }
         }
         return .concatenation(children)

Original file line number	Diff line number	Diff line change
`@@ -102,7 +102,7 @@ extension AST.Node {`
`102`	`102`	`curIdx = nextIdx`
`103`	`103`	`} else {`
`104`	`104`	`children.append(astChildren[curIdx].dslTreeNode)`
`105`		`- children.formIndex(after: &curIdx)`
	`105`	`+ astChildren.formIndex(after: &curIdx)`
`106`	`106`	`}`
`107`	`107`	`}`
`108`	`108`	`return .concatenation(children)`