fix(cli): restore join_for_log in UnpublishCommand

Author: GaspardKirira

src/commands/UnpublishCommand.cpp

@@ -123,6 +123,42 @@ namespace vix::commands
       return fs::exists(dir / ".git", ec);
     }
 
+    std::string join_for_log(const std::vector<std::string> &args)
+    {
+      std::ostringstream out;
+
+      for (std::size_t i = 0; i < args.size(); ++i)
+      {
+        if (i > 0)
+          out << ' ';
+
+        const std::string &arg = args[i];
+
+        const bool needsQuotes =
+            arg.find(' ') != std::string::npos ||
+            arg.find('\t') != std::string::npos ||
+            arg.find('"') != std::string::npos;
+
+        if (!needsQuotes)
+        {
+          out << arg;
+          continue;
+        }
+
+        out << '"';
+        for (char c : arg)
+        {
+          if (c == '"')
+            out << "\\\"";
+          else
+            out << c;
+        }
+        out << '"';
+      }
+
+      return out.str();
+    }
+
     /* =========================
        Process runner (no system)
     ========================= */