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authorMartijn Dekker <martijn@inlv.org>2018-12-25 17:18:57 +0000
committerPeter Stephenson <p.w.stephenson@ntlworld.com>2018-12-30 18:03:02 +0000
commit4215fcb1075f4608cf039ae9b593b07580060a70 (patch)
tree2586b5122d62b4715afdd0a14fb1866d0b20b6d1 /Doc
parentd0f92b448e74206a08ee2718d74766b9e9ddd349 (diff)
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43944: apply NO_UNSET consistently to arithmeitc
Diffstat (limited to 'Doc')
-rw-r--r--Doc/Zsh/options.yo4
1 files changed, 3 insertions, 1 deletions
diff --git a/Doc/Zsh/options.yo b/Doc/Zsh/options.yo
index 25b3d5736..bc182eb7b 100644
--- a/Doc/Zsh/options.yo
+++ b/Doc/Zsh/options.yo
@@ -753,7 +753,9 @@ pindex(NOUNSET)
 cindex(parameters, substituting unset)
 cindex(unset parameters, substituting)
 item(tt(UNSET) (tt(PLUS()u), ksh: tt(PLUS()u)) <K> <S> <Z>)(
-Treat unset parameters as if they were empty when substituting.
+Treat unset parameters as if they were empty when substituting, and as if
+they were zero when reading their values in arithmetic expansion and
+arithmetic commands.
 Otherwise they are treated as an error.
 )
 pindex(WARN_CREATE_GLOBAL)