Fix custom syntax files not highlighting

Fixes #1530

diff --git a/internal/buffer/buffer.go b/internal/buffer/buffer.go
index 10762e941c365506616304374f67d5d4be92f2ae..f08f532350f38c2710879bceec32399b0226e687 100644 (file)
--- a/internal/buffer/buffer.go
+++ b/internal/buffer/buffer.go
@@ -586,6 +586,7 @@ func (b *Buffer) UpdateRules() {
                                        continue
                                }
                                b.SyntaxDef = syndef
+                               syntaxFile = f.Name()
                                break
                        }
                }