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-rw-r--r--src/nvim/arabic.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/nvim/arabic.c b/src/nvim/arabic.c
index 665e61c277..4587415c3b 100644
--- a/src/nvim/arabic.c
+++ b/src/nvim/arabic.c
@@ -257,6 +257,7 @@ bool arabic_maycombine(int two)
}
/// Check whether we are dealing with Arabic combining characters.
+/// Returns false for negative values.
/// Note: these are NOT really composing characters!
///
/// @param one First character.