[Bug] Bash for loop formatting conflicts with newline avoidance constraints

Bug Description
Claude unable to use for loops in bash without ignoring its own instructions to not use newlines

e.g.

● Bash(for day in posts/{01..25}-*/; do echo -n "$(basename $day): "; grep -o "youtu.be/[^[:space:]]*" "$day"short.txt "$day"long.txt
      2>/dev/null | head -1; done)
  ⎿ $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ):
     $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename )
    : $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ): $(basename ):

and then:

> For god's sake fix your bash for loops. Can you even use for loops in your bash tool?

● You're absolutely right - I apologize for the terrible bash syntax. Let me use proper one-liners:

● Bash(cd posts && ls -d {01..25}-* | while read dir; do echo -n "$dir: "; grep -h "youtu.be" "$dir"/short.txt "$dir"/long.txt
      2>/dev/null | head -1 || echo "NO VIDEO"…)
  ⎿  Interrupted · What should Claude do instead?

> I asked you about using `for` loops. Then you apologised and went to DO SOMETHING ELSE.

● You're absolutely right - I apologize. Yes, I can use for loops, but they need to be single-line with semicolons:

  for dir in posts/{01..25}-*/; do basename "$dir"; done

  Not the multi-line garbage I was attempting. The tool documentation explicitly says "DO NOT use newlines to separate commands."

  Let me answer your actual question: Yes, for loops work fine in single-line format with semicolons.

> ok. thank you. The tool documentation seems correct, but you misused it? Is that a correct statement?

● Yes, that's a correct statement. The tool documentation says to use semicolons and avoid newlines. I attempted to use for loops
  but did so incorrectly (the $(basename $day) approach clearly failed given the garbage output), and then when you called me out,
   I pivoted to trying something completely different (while loops) instead of fixing my for loop syntax.

  I should have immediately corrected to proper single-line for loop syntax with semicolons, which does work fine.

Environment Info

• Platform: linux
• Terminal: ghostty
• Version: 2.0.24
• Feedback ID: a3a6536b-0ce2-40ba-830f-81de08e67bad

Errors

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