Fix false “undefined name” message caused by cell magic

[i-aki-y]

References

In this PR, I want to fix #635.

Code changes

According to the comment in #635, I implemented another transformation to the specific cell magics.

From:

%%capture --no-display
x = 1

To:

# START_CELL_MAGIC("capture", "--no-display")
x = 1
# END_CELL_MAGIC

Instead of:

get_ipython().run_cell_magic("capture", "--no-display", """x=1""")

Currently, the target cell magics are hard coded (%%time, %%capture).
It would be better if the list is configurable.
Since I'm new to the project, I need more time to figure out how to make the list configurable, but I will try this in the near future.

User-facing changes

As pointed out in #635, variables defined inside cell magics are not recognized by the lsp, and undefined name message shows up.
This PR tries to remove these false messages.

Backwards-incompatible changes

No

Chores

• linted
• tested
• documented
• changelog entry

[github-actions]

👈 Launch a binder notebook on branch i-aki-y/jupyterlab-lsp/fix-cell-magic-scope

[krassowski]

Thank you @i-aki-y for the PR (and patience)