Respect options from shebangs of target scripts in wrapper scripts generated by python_generate_wrapper_scripts().
(Patch by Arfrever. Backported from Progress Overlay.)
--- python.eclass
+++ python.eclass
@@ -1346,7 +1346,8 @@
 cpython_re = re.compile(r"^python(\d+\.\d+)$")
 jython_re = re.compile(r"^jython(\d+\.\d+)$")
 pypy_re = re.compile(r"^pypy-c(\d+\.\d+)$")
-python_shebang_re = re.compile(r"^#! *(${EPREFIX}/usr/bin/python|(${EPREFIX})?/usr/bin/env +(${EPREFIX}/usr/bin/)?python)")
+cpython_shebang_re = re.compile(r"^#![ \t]*(?:${EPREFIX}/usr/bin/python|(?:${EPREFIX})?/usr/bin/env[ \t]+(?:${EPREFIX}/usr/bin/)?python)")
+python_shebang_options_re = re.compile(r"^#![ \t]*${EPREFIX}/usr/bin/(?:jython|pypy-c|python)(?:\d+(?:\.\d+)?)?[ \t]+(-\S)")
 python_verification_output_re = re.compile("^GENTOO_PYTHON_TARGET_SCRIPT_PATH supported\n$")
 
 pypy_versions_mapping = {
@@ -1450,14 +1451,19 @@
 
 target_executable = open(target_executable_path, "rb")
 target_executable_first_line = target_executable.readline()
+target_executable.close()
 if not isinstance(target_executable_first_line, str):
 	# Python 3
 	target_executable_first_line = target_executable_first_line.decode("utf_8", "replace")
 
-python_shebang_matched = python_shebang_re.match(target_executable_first_line)
-target_executable.close()
+options = []
+python_shebang_options_matched = python_shebang_options_re.match(target_executable_first_line)
+if python_shebang_options_matched is not None:
+	options = [python_shebang_options_matched.group(1)]
+
+cpython_shebang_matched = cpython_shebang_re.match(target_executable_first_line)
 
-if python_shebang_matched is not None:
+if cpython_shebang_matched is not None:
 	try:
 		python_interpreter_path = "${EPREFIX}/usr/bin/%s" % EPYTHON
 		os.environ["GENTOO_PYTHON_TARGET_SCRIPT_PATH_VERIFICATION"] = "1"
@@ -1480,9 +1486,9 @@
 			os.environ["GENTOO_PYTHON_TARGET_SCRIPT_PATH"] = target_executable_path
 
 		if hasattr(os, "execv"):
-			os.execv(python_interpreter_path, [python_interpreter_path] + sys.argv)
+			os.execv(python_interpreter_path, [python_interpreter_path] + options + sys.argv)
 		else:
-			sys.exit(subprocess.Popen([python_interpreter_path] + sys.argv).wait())
+			sys.exit(subprocess.Popen([python_interpreter_path] + options + sys.argv).wait())
 	except (KeyboardInterrupt, SystemExit):
 		raise
 	except: