add message & sort supress keys

# Conflicts:
#	src/config.ts

Author: sergiolms

package.json

@@ -4717,22 +4717,23 @@
 					"gitlens.advanced.messages": {
 						"type": "object",
 						"default": {
+							"suppressBlameInvalidIgnoreRevsFileBadRevisionWarning": false,
+							"suppressBlameInvalidIgnoreRevsFileWarning": false,
 							"suppressCommitHasNoPreviousCommitWarning": false,
 							"suppressCommitNotFoundWarning": false,
 							"suppressCreatePullRequestPrompt": false,
 							"suppressDebugLoggingWarning": false,
 							"suppressFileNotUnderSourceControlWarning": false,
+							"suppressGitBranchNotFullyMergedWarning": false,
 							"suppressGitDisabledWarning": false,
 							"suppressGitMissingWarning": false,
 							"suppressGitVersionWarning": false,
-							"suppressLineUncommittedWarning": false,
-							"suppressNoRepositoryWarning": false,
-							"suppressRebaseSwitchToTextWarning": false,
 							"suppressIntegrationDisconnectedTooManyFailedRequestsWarning": false,
 							"suppressIntegrationRequestFailed500Warning": false,
 							"suppressIntegrationRequestTimedOutWarning": false,
-							"suppressBlameInvalidIgnoreRevsFileWarning": false,
-							"suppressBlameInvalidIgnoreRevsFileBadRevisionWarning": false
+							"suppressLineUncommittedWarning": false,
+							"suppressNoRepositoryWarning": false,
+							"suppressRebaseSwitchToTextWarning": false
 						},
 						"properties": {
 							"suppressCommitHasNoPreviousCommitWarning": {

src/messages.ts

@@ -138,6 +138,18 @@ export function showGitVersionUnsupportedErrorMessage(
 	);
 }
 
+export async function showGitBranchNotFullyMergedPrompt(branchName: string) {
+	const confirm = { title: 'Retry with --force flag' };
+	const result = await showMessage(
+		'warn',
+		`Unable to delete branch '${branchName}'. It is not fully merged.`,
+		'suppressGitBranchNotFullyMergedWarning',
+		{ title: "Don't Show Again" },
+		confirm,
+	);
+	return result === confirm;
+}
+
 export async function showPreReleaseExpiredErrorMessage(version: string) {
 	const upgrade = { title: 'Upgrade' };
 	const switchToRelease = { title: 'Switch to Release Version' };