Add support for ~ shell special character

Change-Id: If8a2de3987d261697a8d31f6761d109dc7de7e66

tobiko/shell/sh/_command.py

@@ -45,7 +45,7 @@ def shell_command(command: ShellCommandType,
         return ShellCommand(str(a) for a in command)
 
 
-_find_unsafe = re.compile(r'[^\w@&%+=:,.;<>/\-()\[\]|*]', re.ASCII).search
+_find_unsafe = re.compile(r'[^\w@&%+=:,.;<>/\-()\[\]|*~]', re.ASCII).search
 
 _is_quoted = re.compile(r'(^\'.*\'$)|(^".*"$)', re.ASCII).search
 

tobiko/tests/unit/shell/sh/test_command.py

@@ -20,7 +20,7 @@ from tobiko.shell import sh
 from tobiko.tests import unit
 
 
-SPECIAL_CHARS = r'@&%+=:,.;<>/-()[]*|'
+SPECIAL_CHARS = r'@&%+=:,.;<>/-()[]*|~'
 
 
 class ShellCommandTest(unit.TobikoUnitTest):