io: clarify SeekEnd offset value

fixes #53474 Change-Id: I14c3dc800dc27233630a54592328bb0df1bbaa5d GitHub-Last-Rev: 46f93cfbd41c1b3274b570744f18d08e7759eb1e GitHub-Pull-Request: golang/go#53505 Reviewed-on: https://go-review.googlesource.com/c/go/+/413614 Reviewed-by: Ian Lance Taylor <[email protected]> Reviewed-by: Emmanuel Odeke <[email protected]> Reviewed-by: Dmitri Shuralyov <[email protected]> TryBot-Result: Gopher Robot <[email protected]> Auto-Submit: Emmanuel Odeke <[email protected]> Run-TryBot: Ian Lance Taylor <[email protected]> Auto-Submit: Ian Lance Taylor <[email protected]>
cloudflare · Jun 25, 2022 · 3b594b9 · 3b594b9
1 parent 4f45ec5
commit 3b594b9
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/io/io.go b/src/io/io.go
@@ -111,7 +111,8 @@ type Closer interface {
 // interpreted according to whence:
 // SeekStart means relative to the start of the file,
 // SeekCurrent means relative to the current offset, and
-// SeekEnd means relative to the end.
+// SeekEnd means relative to the end
+// (for example, offset = -2 specifies the penultimate byte of the file).
 // Seek returns the new offset relative to the start of the
 // file or an error, if any.
 //