message: With autoClosingBrackets on, set begin snippet to 'snipet{$0}'
  We make sure that {} is always added as a pair.
diff: @@ -43,13 +43,18 @@ export class Command implements IProvider {
  Object.keys(defaultCmds).forEach(key => {
  if (key in snippetReplacements) {
  const action = snippetReplacements[key]
  - if (action !== '') {
  + if (action === '') {
  + return
  + }
  defaultCmds[key].snippet = action
  - this.defaultCmds.push(this.entryCmdToCompletion(key, defaultCmds[key]))
  + } else if (key === 'begin') {
  + // Tweak \begin{
  + const autoClosing = vscode.workspace.getConfiguration('editor').get('autoClosingBrackets') as string
  + if (autoClosing !== 'never') {
  + defaultCmds[key].snippet = 'begin{$0}'
  }
  - } else {
  - this.defaultCmds.push(this.entryCmdToCompletion(key, defaultCmds[key]))
  }
  + this.defaultCmds.push(this.entryCmdToCompletion(key, defaultCmds[key]))
  })
  // Initialize default env begin-end pairs
  @@ -62,6 +67,7 @@ export class Command implements IProvider {
  this.defaultCmds.filter(cmd => bracketCmds.includes(this.getCmdName(cmd))).forEach(cmd => {
  this.bracketCmds[cmd.label.slice(1)] = cmd
  })
  +
  }
  provideFrom(_type: string, _result: RegExpMatchArray, args: {document: vscode.TextDocument, position: vscode.Position, token: vscode.CancellationToken, context: vscode.CompletionContext}) {
  