Regular expressions (regexps) can be used when searching and filtering throughout the IDE. See 28.7 Regular expression syntax in the LispWorks® User Guide and Reference Manual for a description for exactly how LispWorks regexp matching operates.
Sometimes you need to select an option to use regexp matching, as the default behavior uses a plain string comparison. For example, see 3.12.2 Advanced Filtering.
Other areas always use regexp matching, such as the search target in some modes of the 16 The Search Files tool, and editor commands with names containing "Regexp".
LispWorks IDE User Guide (Macintosh version) - 01 Dec 2021 19:36:18