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matplotlib__matplotlib-23964

Based on the issue description, I have enough information to create the patch. The issue states:

  • Skills
  • AI research
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What it does and how to use it

A skill that teaches Claude Code to do ai research tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/matplotlib-matplotlib-23964 && curl -fsSL https://doutorai.pt/data/lib/skills__matplotlib-matplotlib-23964.md -o .claude/skills/matplotlib-matplotlib-23964/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

Based on the issue description, I have enough information to create the patch. The issue states:

1. The error occurs at line 673: `for ps_name, xs_names in stream:`
2. The bug is in `backend_ps.py` 
3. Adding `if curr_stream:` before line 669 fixes the bug
4. The issue is that when there's an empty line in the text, `curr_stream` is None, and when it gets appended to `stream`, iterating over `stream` tries to unpack None

Looking at the typical pattern in matplotlib's PostScript backend for text rendering, the issue is that:
1. Text is processed line by line
2. For empty lines, no font/charac

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