all: use "reports whether" in place of "returns true if(f)"

Comment changes only.

Change-Id: I56848814564c4aa0988b451df18bebdfc88d6d94
Reviewed-on: https://go-review.googlesource.com/7721
Reviewed-by: Rob Pike <r@golang.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/text/scanner/scanner.go b/src/text/scanner/scanner.go
index 5199ee4fc7..9638577bcf 100644
--- a/src/text/scanner/scanner.go
+++ b/src/text/scanner/scanner.go
@@ -43,7 +43,7 @@ type Position struct {
 	Column   int    // column number, starting at 1 (character count per line)
 }
 
-// IsValid returns true if the position is valid.
+// IsValid reports whether the position is valid.
 func (pos *Position) IsValid() bool { return pos.Line > 0 }
 
 func (pos Position) String() string {