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Indenting Text and Removing Whitespace with Emacs

In this lab, you will be adding and removing whitespace from text files. Basic knowledge of opening files, along with familiarity of working with Emacs whitespace, is recommended. Upon completing this lab, you will know how to work with whitespace in Emacs and how to use line and region indentation.

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Labs

Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Last updated
Clock icon Jul 20, 2025

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Table of Contents

  1. Challenge

    Open the Files

    • Open the file /tmp/remove_whitespace.
    • Open the file /tmp/add_indentation.
  2. Challenge

    Correct Whitespace

    • Remove all the empty lines from the file /tmp/remove_whitespace.
    • Remove leading and trailing whitespace from /tmp/remove_whitespace.
  3. Challenge

    Correct Indentation

    • Follow the instructions in Section 1 of the file /tmp/add_indentation to complete the line indentation.
    • Follow the instructions in Section 2 of the file /tmp/add_indentation to complete the region indentation.

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