Inspection of arguments in function cause inspection of surrounding function

[hrdl-github]

At the moment inspection of arguments in function calls is not possible as the function is inspected instead. This is because do_inspect relies on IPython.utils.tokenutil.generate_tokens:

ipykernel/ipykernel/ipkernel.py

Lines 544 to 546 in c24b252

	def do_inspect(self, code, cursor_pos, detail_level=0, omit_sections=()):
	"""Handle code inspection."""
	name = token_at_cursor(code, cursor_pos)

The behaviour of generate_tokens has changed in ipython/ipython@240eef9 . Before it would return the tokens of names, including parameters and names, even if they were inside a function call. Not all edge cases were handled correctly, but for most day-to-day inspection tasks were served fine. Now generate_tokens returns function names if the cursor is positioned inside the parentheses:

from IPython.utils.tokenutil import generate_tokens, token_at_cursor
from io import StringIO
code = 'func(param1, param2=arg)'
tokens = list(generate_tokens(StringIO(code).readline))

pos = dict(func=3, param1=8, param2=15, arg=22)
# Current behaviour
dict((k, token_at_cursor(code, v) for k, v in pos.items())
# Output: {'func': 'func', 'param1': 'func', 'param2': 'func', 'arg': 'func'}