internal/imports: force to repair imports group regardless of how the…

cmd/goimports/goimports.go

@@ -54,6 +54,7 @@ var (
 
 func init() {
 	flag.BoolVar(&options.AllErrors, "e", false, "report all errors (not just the first 10 on different lines)")
+	flag.BoolVar(&options.Env.RepairGroup, "repair-group", false, "force to repair imports group regardless of how they were originally grouped")
 	flag.StringVar(&options.Env.LocalPrefix, "local", "", "put imports beginning with this string after 3rd-party packages; comma-separated list")
 	flag.BoolVar(&options.FormatOnly, "format-only", false, "if true, don't fix imports and only format. In this mode, goimports is effectively gofmt, with the addition that imports are grouped into sections.")
 }

internal/imports/fix.go

@@ -614,6 +614,7 @@ func getAllCandidates(filename string, env *ProcessEnv) ([]ImportFix, error) {
 type ProcessEnv struct {
 	LocalPrefix string
 	Debug       bool
+	RepairGroup bool
 
 	// If non-empty, these will be used instead of the
 	// process-wide values.

internal/imports/sortimports.go

@@ -37,11 +37,14 @@ func sortImports(env *ProcessEnv, fset *token.FileSet, f *ast.File) {
 		// Identify and sort runs of specs on successive lines.
 		i := 0
 		specs := d.Specs[:0]
-		for j, s := range d.Specs {
-			if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
-				// j begins a new run.  End this one.
-				specs = append(specs, sortSpecs(env, fset, f, d.Specs[i:j])...)
-				i = j
+		// If repairGroup is true, treats all specs in the same import group.
+		if !env.RepairGroup {
+			for j, s := range d.Specs {
+				if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
+					// j begins a new run.  End this one.
+					specs = append(specs, sortSpecs(env, fset, f, d.Specs[i:j])...)
+					i = j
+				}
 			}
 		}
 		specs = append(specs, sortSpecs(env, fset, f, d.Specs[i:])...)