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-rw-r--r--doc/coreutils.texi3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index a156092f9..1ae025fca 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -3320,7 +3320,8 @@ category determines the month spellings.
Sort numerically: the number begins each line; specifically, it consists
of optional blanks, an optional @samp{-} sign, and zero or more
digits possibly separated by thousands separators, optionally followed
-by a decimal-point character and zero or more digits. The @env{LC_NUMERIC}
+by a decimal-point character and zero or more digits. A string of
+zero digits is interpreted as @samp{0}. The @env{LC_NUMERIC}
locale specifies the decimal-point character and thousands separator.
Numeric sort uses what might be considered an unconventional method to