Backport of Colorize diag details into v1.14 (#38148)

internal/command/format/diagnostic.go

@@ -88,7 +88,7 @@ func DiagnosticFromJSON(diag *viewsjson.Diagnostic, color *colorstring.Colorize,
 			lines := strings.Split(diag.Detail, "\n")
 			for _, line := range lines {
 				if !strings.HasPrefix(line, " ") {
-					line = wordwrap.WrapString(line, uint(paraWidth))
+					line = wordwrap.WrapString(color.Color(line), uint(paraWidth))
 				}
 				fmt.Fprintf(&buf, "%s\n", line)
 			}
@@ -162,7 +162,7 @@ func DiagnosticPlainFromJSON(diag *viewsjson.Diagnostic, width int) string {
 			lines := strings.Split(diag.Detail, "\n")
 			for _, line := range lines {
 				if !strings.HasPrefix(line, " ") {
-					line = wordwrap.WrapString(line, uint(width-1))
+					line = wordwrap.WrapString(disabledColorize.Color(line), uint(width-1))
 				}
 				fmt.Fprintf(&buf, "%s\n", line)
 			}

internal/command/init_test.go

@@ -1552,6 +1552,69 @@ prompts.
 
 }
 
+func TestInit_cloudConfigColorTokensProcessed(t *testing.T) {
+	// This test verifies that when the error
+	// diagnostic detail contains color formatting tokens like [bold] and
+	// [reset], they are properly processed
+	// by the diagnostic formatter and do not appear as literal text in the
+	// output.
+	td := t.TempDir()
+	testCopyDir(t, testFixturePath("init-cloud-no-workspaces"), td)
+	t.Chdir(td)
+
+	ui := cli.NewMockUi()
+	view, done := testView(t)
+	c := &InitCommand{
+		Meta: Meta{
+			Ui:   ui,
+			View: view,
+		},
+	}
+
+	args := []string{}
+	code := c.Run(args)
+	if code == 0 {
+		t.Fatalf("expected error, got success\n%s", done(t).Stdout())
+	}
+
+	gotStderr := done(t).Stderr()
+
+	expected := `
+Error: failed to create backend alias to target "". The hostname is not in the correct format.
+
+
+Error: Invalid workspaces configuration
+
+  on main.tf line 7, in terraform:
+   7:   cloud {
+
+Missing workspace mapping strategy. Either workspace "tags" or "name" is
+required.
+
+The 'workspaces' block configures how Terraform CLI maps its workspaces for
+this single
+configuration to workspaces within an HCP Terraform or Terraform Enterprise
+organization. Two strategies are available:
+
+tags - A set of tags used to select remote HCP Terraform or Terraform
+Enterprise workspaces to be used for this single
+configuration. New workspaces will automatically be tagged with these tag
+values. Generally, this
+is the primary and recommended strategy to use.  This option conflicts with
+"name".
+
+name - The name of a single HCP Terraform or Terraform Enterprise workspace
+to be used with this configuration.
+When configured, only the specified workspace can be used. This option
+conflicts with "tags"
+and with the TF_WORKSPACE environment variable.
+`
+
+	if diff := cmp.Diff(gotStderr, expected); diff != "" {
+		t.Errorf("unexpected output (-got +expected):\n%s", diff)
+	}
+}
+
 // make sure inputFalse stops execution on migrate
 func TestInit_inputFalse(t *testing.T) {
 	td := t.TempDir()

internal/command/testdata/init-cloud-no-workspaces/main.tf

@@ -0,0 +1,10 @@
+# This is a configuration with HCP Terraform mode activated but without
+# a workspaces block, which should trigger an "Invalid workspaces configuration"
+# error during initialization. This is used to test that the diagnostic
+# formatting correctly processes color tokens in the error detail message.
+
+terraform {
+  cloud {
+    organization = "PLACEHOLDER"
+  }
+}