all: single space after period.

The tree's pretty inconsistent about single space vs double space
after a period in documentation. Make it consistently a single space,
per earlier decisions. This means contributors won't be confused by
misleading precedence.

This CL doesn't use go/doc to parse. It only addresses // comments.
It was generated with:

$ perl -i -npe 's,^(\s*// .+[a-z]\.)  +([A-Z]),$1 $2,' $(git grep -l -E '^\s*//(.+\.)  +([A-Z])')
$ go test go/doc -update

Change-Id: Iccdb99c37c797ef1f804a94b22ba5ee4b500c4f7
Reviewed-on: https://go-review.googlesource.com/20022
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dave Day <djd@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

2 files changed, 4 insertions, 4 deletions

diff --git a/src/cmd/gofmt/internal.go b/src/cmd/gofmt/internal.go
index f764b10ebb..cbc6983b61 100644
--- a/src/cmd/gofmt/internal.go
+++ b/src/cmd/gofmt/internal.go
@@ -28,9 +28,9 @@ func parse(fset *token.FileSet, filename string, src []byte, fragmentOk bool) (
 ) {
 	// Try as whole source file.
 	file, err = parser.ParseFile(fset, filename, src, parserMode)
-	// If there's no error, return.  If the error is that the source file didn't begin with a
+	// If there's no error, return. If the error is that the source file didn't begin with a
 	// package line and source fragments are ok, fall through to
-	// try as a source fragment.  Stop and return on any other error.
+	// try as a source fragment. Stop and return on any other error.
 	if err == nil || !fragmentOk || !strings.Contains(err.Error(), "expected 'package'") {
 		return
 	}
@@ -59,7 +59,7 @@ func parse(fset *token.FileSet, filename string, src []byte, fragmentOk bool) (
 
 	// If this is a statement list, make it a source file
 	// by inserting a package clause and turning the list
-	// into a function body.  This handles expressions too.
+	// into a function body. This handles expressions too.
 	// Insert using a ;, not a newline, so that the line numbers
 	// in fsrc match the ones in src. Add an extra '\n' before the '}'
 	// to make sure comments are flushed before the '}'.
diff --git a/src/cmd/gofmt/rewrite.go b/src/cmd/gofmt/rewrite.go
index 1eaeca6f10..550492bf29 100644
--- a/src/cmd/gofmt/rewrite.go
+++ b/src/cmd/gofmt/rewrite.go
@@ -158,7 +158,7 @@ func isWildcard(s string) bool {
 // recording wildcard submatches in m.
 // If m == nil, match checks whether pattern == val.
 func match(m map[string]reflect.Value, pattern, val reflect.Value) bool {
-	// Wildcard matches any expression.  If it appears multiple
+	// Wildcard matches any expression. If it appears multiple
 	// times in the pattern, it must match the same expression
 	// each time.
 	if m != nil && pattern.IsValid() && pattern.Type() == identType {