code_style: do not use .Quoted() in merge/diff tool command

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Commands/DiffTool.cs

@@ -28,8 +28,8 @@ public void Open()
             }
             else if (File.Exists(_exec))
             {
-                var cmd = $"{_exec.Quoted()} {_merger.DiffCmd}";
-                Args = $"-c difftool.sourcegit.cmd={cmd.Quoted()} difftool --tool=sourcegit --no-prompt {_option}";
+                var cmd = $"""\"{_exec}\" {_merger.DiffCmd}""";
+                Args = $"""-c difftool.sourcegit.cmd="{cmd}" difftool --tool=sourcegit --no-prompt {_option}""";
             }
             else
             {

src/Commands/MergeTool.cs

@@ -29,8 +29,8 @@ public async Task<bool> OpenAsync()
             }
             else if (File.Exists(_exec))
             {
-                var cmd = $"{_exec.Quoted()} {_merger.Cmd}";
-                Args = $"-c mergetool.sourcegit.cmd={cmd.Quoted()} -c mergetool.writeToTemp=true -c mergetool.keepBackup=false -c mergetool.trustExitCode=true mergetool --tool=sourcegit {_file}";
+                var cmd = $"""\"{_exec}\" {_merger.Cmd}""";
+                Args = $"""-c mergetool.sourcegit.cmd="{cmd}" -c mergetool.writeToTemp=true -c mergetool.keepBackup=false -c mergetool.trustExitCode=true mergetool --tool=sourcegit {_file}""";
             }
             else
             {

src/Models/DiffOption.cs

@@ -100,13 +100,13 @@ public override string ToString()
         {
             var builder = new StringBuilder();
             if (!string.IsNullOrEmpty(_extra))
-                builder.Append($"{_extra} ");
+                builder.Append(_extra).Append(' ');
             foreach (var r in _revisions)
-                builder.Append($"{r} ");
+                builder.Append(r).Append(' ');
 
             builder.Append("-- ");
             if (!string.IsNullOrEmpty(_orgPath))
-                builder.Append($"{_orgPath.Quoted()} ");
+                builder.Append(_orgPath.Quoted()).Append(' ');
             builder.Append(_path.Quoted());
 
             return builder.ToString();