https://bugs.kde.org/show_bug.cgi?id=522208
Bug ID: 522208
Summary: LSP documentHighlight request sent with invalid cursor
position when pressing Enter in the end of Python
files
Classification: Applications
Product: kate
Version First 25.04.3
Reported In:
Platform: Debian stable
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: application
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
**Title**
LSP documentHighlight request sent with invalid cursor position when pressing
Enter in Python files
**Environment**
* Kate 25.04.3
* Debian (testing/unstable)
* Python 3.13.5
* python-lsp-server 1.12.0
* Jedi 0.19.1
**Description**
When editing any Python file with the LSP client enabled and "Highlight symbol
under cursor" enabled, pressing Enter at the end of a line causes the Python
LSP server to log the following exception repeatedly:
```
WARNING - pylsp.config.config - Failed to load hook pylsp_document_highlight:
ValueError: `line` parameter is not in a valid range.
```
The traceback originates from:
```
pylsp.plugins.highlight
→ jedi.api.helpers
→ ValueError: `line` parameter is not in a valid range.
```
The warning appears every time Enter is pressed.
Disabling **"Highlight symbol under cursor"** in Kate's LSP Client settings
immediately stops the warnings.
All other LSP functionality (completion, diagnostics, hover, etc.) continues to
work normally.
**Steps to reproduce**
1. Open Kate.
2. Enable the LSP Client.
3. Enable "Highlight symbol under cursor".
4. Open any Python file.
5. Place the cursor at the end of a line.
6. Press Enter.
7. Observe the Python LSP server log.
**Expected behavior**
Kate should not send a `documentHighlight` request with an invalid position. No
exceptions should be generated by the language server.
**Actual behavior**
The language server receives a `documentHighlight` request that ultimately
results in:
```
ValueError: `line` parameter is not in a valid range.
```
Disabling "Highlight symbol under cursor" avoids the issue entirely.
Traceback:
```
2026-06-26 13:40:36,028 +05 - WARNING - pylsp.config.config - Failed to load
hook pylsp_document_highlight: `line` parameter is not in a valid range.
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pylsp/config/config.py", line 39, in
_hookexec
return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/pluggy/_manager.py", line 480, in
traced_hookexec
return outcome.get_result()
~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/pluggy/_result.py", line 100, in
get_result
raise exc.with_traceback(exc.__traceback__)
File "/usr/lib/python3/dist-packages/pluggy/_result.py", line 62, in
from_call
result = func()
File "/usr/lib/python3/dist-packages/pluggy/_manager.py", line 477, in
<lambda>
lambda: oldcall(hook_name, hook_impls, caller_kwargs, firstresult)
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/pluggy/_callers.py", line 139, in
_multicall
raise exception.with_traceback(exception.__traceback__)
File "/usr/lib/python3/dist-packages/pluggy/_callers.py", line 103, in
_multicall
res = hook_impl.function(*args)
File "/usr/lib/python3/dist-packages/pylsp/plugins/highlight.py", line 14, in
pylsp_document_highlight
usages = document.jedi_script().get_references(**code_position)
File "/usr/lib/python3/dist-packages/jedi/api/helpers.py", line 473, in
wrapper
raise ValueError('`line` parameter is not in a valid range.')
ValueError: `line` parameter is not in a valid range.
```
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