tools: fix typos in docs and comments

Change-Id: I24d372c18122805b14c4f1214a7e18345397af9e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/644136
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>

Author: merrickclay

cmd/file2fuzz/main.go

@@ -13,7 +13,7 @@
 // output to stdout. If any position arguments are provided stdin is ignored
 // and the arguments are assumed to be input files to convert.
 //
-// The -o flag provides an path to write output files to. If only one positional
+// The -o flag provides a path to write output files to. If only one positional
 // argument is specified it may be a file path or an existing directory, if there are
 // multiple inputs specified it must be a directory. If a directory is provided
 // the name of the file will be the SHA-256 hash of its contents.

go/analysis/passes/pkgfact/pkgfact.go

@@ -45,7 +45,7 @@ var Analyzer = &analysis.Analyzer{
 }
 
 // A pairsFact is a package-level fact that records
-// an set of key=value strings accumulated from constant
+// a set of key=value strings accumulated from constant
 // declarations in this package and its dependencies.
 // Elements are ordered by keys, which are unique.
 type pairsFact []string

go/analysis/passes/unreachable/doc.go

@@ -9,6 +9,6 @@
 // unreachable: check for unreachable code
 //
 // The unreachable analyzer finds statements that execution can never reach
-// because they are preceded by an return statement, a call to panic, an
+// because they are preceded by a return statement, a call to panic, an
 // infinite loop, or similar constructs.
 package unreachable

go/callgraph/vta/propagation_test.go

@@ -336,7 +336,7 @@ func TestPropagation(t *testing.T) {
 				"Local(t2)": "A;B;C",
 			},
 		},
-		// The outer loop of subsumed-scc pushes A an B through the graph.
+		// The outer loop of subsumed-scc pushes A and B through the graph.
 		{name: "subsumed-scc", graph: suite["subsumed-scc"],
 			want: map[string]string{
 				"Local(t0)": "A;B",

go/expect/extract.go

@@ -21,7 +21,7 @@ import (
 const commentStart = "@"
 const commentStartLen = len(commentStart)
 
-// Identifier is the type for an identifier in an Note argument list.
+// Identifier is the type for an identifier in a Note argument list.
 type Identifier string
 
 // Parse collects all the notes present in a file.

go/loader/loader_test.go

@@ -558,7 +558,7 @@ func TestVendorCwdIssue16580(t *testing.T) {
 // - TypeCheckFuncBodies hook
 
 func TestTransitivelyErrorFreeFlag(t *testing.T) {
-	// Create an minimal custom build.Context
+	// Create a minimal custom build.Context
 	// that fakes the following packages:
 	//
 	// a --> b --> c!   c has an error

go/packages/packagestest/expect.go

@@ -411,7 +411,7 @@ func (e *Exported) rangeConverter(n *expect.Note, args []interface{}) (Range, []
 			eof := tokFile.Pos(tokFile.Size())
 			return newRange(tokFile, eof, eof), args, nil
 		default:
-			// look up an marker by name
+			// look up a marker by name
 			mark, ok := e.markers[string(arg)]
 			if !ok {
 				return Range{}, nil, fmt.Errorf("cannot find marker %v", arg)

go/ssa/builder_test.go

@@ -214,7 +214,7 @@ func TestRuntimeTypes(t *testing.T) {
 		input string
 		want  []string
 	}{
-		// An package-level type is needed.
+		// A package-level type is needed.
 		{`package A; type T struct{}; func (T) f() {}; var x any = T{}`,
 			[]string{"*p.T", "p.T"},
 		},

go/ssa/emit.go

@@ -18,7 +18,7 @@ import (
 // emitAlloc emits to f a new Alloc instruction allocating a variable
 // of type typ.
 //
-// The caller must set Alloc.Heap=true (for an heap-allocated variable)
+// The caller must set Alloc.Heap=true (for a heap-allocated variable)
 // or add the Alloc to f.Locals (for a frame-allocated variable).
 //
 // During building, a variable in f.Locals may have its Heap flag

gopls/doc/analyzers.md

@@ -912,7 +912,7 @@ Package documentation: [unmarshal](https://pkg.go.dev/golang.org/x/tools/go/anal
 
 
 The unreachable analyzer finds statements that execution can never reach
-because they are preceded by an return statement, a call to panic, an
+because they are preceded by a return statement, a call to panic, an
 infinite loop, or similar constructs.
 
 Default: on.