[3.3 Git Branching - Branch Management] - tip 'git branch --no-merged master' does not work or is not clear

Start by locating the English Pro Git source for section 3.3, “Git Branching - Branch Management,” and inspect the tip containing git branch --no-merged master. Clarify the surrounding text or example so readers understand what topicA and featureB represent, then verify the result on the book website and in the generated PDF.

There's no existing/similar bug report.

• I have searched the existing issues

This report is about a single actionable bug.

• I'm reporting a single actionable bug

This report is about the ProGit book, version 2, English language.

• This bug is not about a translation or old version

Bug covers book website/pdf

• I confirm the bug is about the book as found on the website/pdf

Problem is present in the Pro Git book on the website?

• This bug also affects the Pro Git book as published on the website.

Which version of the book is affected?

Source files

Describe the bug:

In the section '3.3 Git Branching - Branch Management' there is the following tip:

$ git checkout testing
$ git branch --no-merged master
topicA
featureB

Reading the tip text and the output of the command, I got the impression that topicA and featureB are issues or functions, and not branches, since topicA and featureB are never mentioned earlier in the book.

Steps to reproduce:

1. Go to '...'
2. Click on '...'
3. 'Scroll down to '...'
4. See error

Expected behavior:

Clear tip text

Screenshots:

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Additional context:

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Device

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Operating system

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Browser/application + version

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