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-rw-r--r--src/eval.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/eval.c b/src/eval.c
index b94712d4579..0380b115195 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -704,10 +704,11 @@ can be referred to by the Emacs help facilities and other programming
tools. The `defvar' form also declares the variable as \"special\",
so that it is always dynamically bound even if `lexical-binding' is t.
-The optional argument INITVALUE is evaluated, and used to set SYMBOL,
-only if SYMBOL's value is void. If SYMBOL is buffer-local, its
-default value is what is set; buffer-local values are not affected.
-If INITVALUE is missing, SYMBOL's value is not set.
+If SYMBOL's value is void and the optional argument INITVALUE is
+provided, INITVALUE is evaluated and the result used to set SYMBOL's
+value. If SYMBOL is buffer-local, its default value is what is set;
+buffer-local values are not affected. If INITVALUE is missing,
+SYMBOL's value is not set.
If SYMBOL has a local binding, then this form affects the local
binding. This is usually not what you want. Thus, if you need to