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-rw-r--r--docs/tags.md4
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/tags.md b/docs/tags.md
index d79c64b5..c2d92b9a 100644
--- a/docs/tags.md
+++ b/docs/tags.md
@@ -78,7 +78,9 @@ sequence with a warning, pardes refuses the Edit. In `s`, `&` in the
replacement is the matched text (`\&` a plain `&`); in `c`, `a` and `i` an
`&` is only an `&`, as in sam. A pattern that finds nothing says so with the
pattern (`no match for regexp /nomatch/`), and an `s` on an empty dot says
-`no substitution: dot is empty`.
+`no substitution: dot is empty`. A loop that finds nothing is no error, as
+in sam: `Edit ,x/zzz/c/bar/` with no `zzz` changes nothing and succeeds,
+silent, where `,s/zzz/bar/` says `no substitution`.
`Undo` and `Redo` are acme's: typed or clicked in a pane's tag, or written
to its `ctl`, they step the body back and forward through its edits, as the