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-rw-r--r--indent/dune.vim2
1 files changed, 2 insertions, 0 deletions
diff --git a/indent/dune.vim b/indent/dune.vim
index 009f7eba..429d6354 100644
--- a/indent/dune.vim
+++ b/indent/dune.vim
@@ -15,3 +15,5 @@ let b:did_indent = 1
" dune format-dune-file uses 1 space to indent
setlocal softtabstop=1 shiftwidth=1 expandtab
+
+let b:undo_indent = "setl et< sts< sw<"