export: Fix replacement of multiple TARGET_NAME expressions

After replacing each such expression, search for following expressions
immediately after the end of the replacement text, not after the
position of the end of the replaced text.

Fixes: #21661

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx
index a853bb18d7..113751a9e9 100644
--- a/Source/cmExportFileGenerator.cxx
+++ b/Source/cmExportFileGenerator.cxx
@@ -707,7 +707,7 @@ void cmExportFileGenerator::ResolveTargetsInGeneratorExpression(
       break;
     }
     input.replace(pos, endPos - pos + 1, targetName);
-    lastPos = endPos;
+    lastPos = pos + targetName.size();
   }
 
   pos = 0;