--- /dev/null
+Shell execution
+-----
+<?php
+``;
+`test`;
+`test $A`;
+`test \``;
+`test \"`;
+-----
+array(
+ 0: Expr_ShellExec(
+ parts: array(
+ )
+ )
+ 1: Expr_ShellExec(
+ parts: array(
+ 0: Scalar_EncapsedStringPart(
+ value: test
+ )
+ )
+ )
+ 2: Expr_ShellExec(
+ parts: array(
+ 0: Scalar_EncapsedStringPart(
+ value: test
+ )
+ 1: Expr_Variable(
+ name: A
+ )
+ )
+ )
+ 3: Expr_ShellExec(
+ parts: array(
+ 0: Scalar_EncapsedStringPart(
+ value: test `
+ )
+ )
+ )
+ 4: Expr_ShellExec(
+ parts: array(
+ 0: Scalar_EncapsedStringPart(
+ value: test \"
+ )
+ )
+ )
+)
\ No newline at end of file