antlr/antlr4 — pull request #155 by bkiers (2013-02-09 14:14:49+00:00)
Title: Added an export-to-PNG button in the TestRig-dialog

Added an export-to-PNG button in the dialog that is launched after invoking org.antlr.v4.runtime.misc.TestRig with the "-gui" parameter. When pressed, a PNG file of the parse tree is created in the present working directory.