LISPSYS (System Variable)

Controls the default AutoLISP development environment and, on AutoCAD for Windows only, the behavior of the VLISP command.

Type:Integer
Saved in:Registry
Initial value:1

Value

Description

0

AutoLISP functions don't fully support Unicode characters.

Visual LISP IDE (VL IDE) is set as the default editor and launched with the VLISP command. AutoLISP source (LSP) files when saved and compiled use the ASCII (MBCS) character set. (Applies to AutoCAD for Windows only)

Note: This setting results in the behavior of AutoCAD 2020 and earlier releases, and is supported on Windows only.

1

AutoLISP functions fully support Unicode characters.

Visual Studio (VS) Code is set as the default editor and launched with the VLISP command. AutoLISP source (LSP) files, when saved, use the encoding set in VS Code, and when compiled, they use the Unicode character set. (Applies to AutoCAD only)

2

AutoLISP functions fully support Unicode characters.

Visual Studio (VS) Code is set as the default editor and launched with the VLISP command. AutoLISP source (LSP) files, when saved, use the encoding set in VS Code, and when compiled they use the ASCII (MBCS) character set. (Applies to AutoCAD only)

Note: AutoCAD or AutoCAD LT must be restarted after changing the current value of the LISPSYS system variable to switch AutoLISP development environments.