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    procedure SynEdit1Change(Sender: TObject);
{$IFDEF DARWIN}
    procedure GetSocketHandler(Sender: TObject; const UseSSL: Boolean; out AHandler: TSocketHandler);
{$ENDIF}
  private
    var currentGroffFilePath: String;
    var currentGroffFileName: String;
    var hasGroff: Boolean;
    var unsavedChanges: Boolean;
{$IFDEF WINDOWS}
    var latestGroffWindowsUrl: String;
{$ENDIF}
    var storeBuildSettings: Boolean;
    var updateCheck: Boolean;
  public

  end;

  TDetectGroffThread = class(TThread)
    procedure Execute; Override;
  end;

var
  MainForm: TMainForm;
  BuildWindow: TBuildStatusWindow;
  hasGroff: Boolean;

implementation

{$R *.lfm}

procedure TDetectGroffThread.Execute;
var
  GroffOutputVersion: String;
begin
  FreeOnTerminate := True;

  {$IFDEF WINDOWS}
  if RunCommand('cmd', ['/c', 'troff --version'], GroffOutputVersion, [], swoHIDE) then
  {$ELSE}
  if RunCommand('/bin/sh', ['-c', 'troff --version'], GroffOutputVersion, [], swoHIDE) then
  {$ENDIF}
  begin
    MainForm.edtGroffInstalledVersion.Text := GroffOutputVersion;
    if pos('GNU', GroffOutputVersion) = 0 then
       ShowMessage('groffstudio thinks that your installed version of troff is not GNU troff.' + LineEnding +
       'If this is correct, you are advised to fix this before continuing.' + LineEnding +
       'If it is an error, please tell me so I can improve this detection.');
    hasGroff := True;
  end else begin
    MainForm.edtGroffInstalledVersion.Text := 'n/a';
    hasGroff := False;
    MainForm.lblTroffCommandNotFound.Visible := True;
  end;
end;

{ TMainForm }

procedure TMainForm.FormCreate(Sender: TObject);
var
  GroffOutputVersion: String;
  OnlineVersionsFile: String;
  {$IFDEF WINDOWS}
  reGroffVersion: TRegExpr;
  {$ENDIF}
  reGroffStudioVersion: TRegExpr;
  FileVerInfo: TFileVersionInfo;
  HasVersionUpdate: Integer;
  GroffHelpers: TGroffHelpers;
  ResStream: TResourceStream;
  {$IFDEF DARWIN}
  HTTPClient: TFPHttpClient;
  {$ENDIF}
begin
  // What's the current running groff version?
  {$IFDEF WINDOWS}
  if RunCommand('cmd', ['/c', 'troff --version'], GroffOutputVersion, [], swoHIDE) then
  {$ELSE}
  if RunCommand('/bin/sh', ['-c', 'troff --version'], GroffOutputVersion, [], swoHIDE) then
  {$ENDIF}
  begin
    edtGroffInstalledVersion.Text := GroffOutputVersion;
    if pos('GNU', GroffOutputVersion) = 0 then
       ShowMessage('groffstudio thinks that your installed version of troff is not GNU troff.' + LineEnding +
       'If this is correct, you are advised to fix this before continuing.' + LineEnding +
       'If it is an error, please tell me so I can improve this detection.');
    hasGroff := True;
  TDetectGroffThread.Create(False);
  end else begin
    edtGroffInstalledVersion.Text := 'n/a';
    hasGroff := False;
    lblTroffCommandNotFound.Visible := True;
  end;

  // Default file name
  currentGroffFileName := '[unsaved file]';

  // Embed the license
  ResStream:= TResourceStream.Create(HInstance, 'LICENSE', RT_RCDATA);
  try
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