Selection Set Filter Lists

Selection Set Filter Lists

Filtering for Extended Data

 

AutoLISP Developer's Guide > Using the AutoLISP Language > Using AutoLISP to Manipulate AutoCAD Objects > Selection Set Handling > Selection Set Filter Lists > 

Wild-Card Patterns in Filter Lists

Symbol names specified in filtering lists can include wild-card patterns. The wild-card patterns recognized by ssget are the same as those recognized by the wcmatch function, and are described in Wild-Card Matching, and under wcmatch in the AutoLISP Reference.

When filtering for anonymous blocks, you must precede the * character with a reverse single quotation mark (`), also known as an escape character, because the * is read by ssget as a wild-card character. For example, you can retrieve an anonymous block named *U2 with the following:

(ssget "X" '((2 . "`*U2")))