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-rw-r--r--src/text/scanner/scanner.go5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/text/scanner/scanner.go b/src/text/scanner/scanner.go
index e085f8a7d9..6fb0422fe5 100644
--- a/src/text/scanner/scanner.go
+++ b/src/text/scanner/scanner.go
@@ -166,7 +166,8 @@ type Scanner struct {
// The Filename field is always left untouched by the Scanner.
// If an error is reported (via Error) and Position is invalid,
// the scanner is not inside a token. Call Pos to obtain an error
- // position in that case.
+ // position in that case, or to obtain the position immediately
+ // after the most recently scanned token.
Position
}
@@ -637,6 +638,8 @@ redo:
// Pos returns the position of the character immediately after
// the character or token returned by the last call to Next or Scan.
+// Use the Scanner's Position field for the start position of the most
+// recently scanned token.
func (s *Scanner) Pos() (pos Position) {
pos.Filename = s.Filename
pos.Offset = s.srcBufOffset + s.srcPos - s.lastCharLen