The Squish IDE loads and saves test scripts (e.g., files with names matching test.*), as Unicode text using the UTF-8 encoding. All the Squish tools assume that UTF-8 is used for all the scripts they execute. (See the Editor view (Section 8.2.6).) If you don't edit your test scripts using the Squish IDE, make sure that the editor you use loads and saves the scripts using UTF-8; or, if your editor is not Unicode-capable, then the most sensible alternative is to restrict your code to 7-bit ASCII—which all modern editors support—since this is a subset of UTF-8.

Note also that some characters, most notably double quotes (") and backslashes (\), must be quoted in string literals. For example, "C:\\My Documents". (This is a requirement shared by all the scripting languages that Squish supports.)