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generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-07-26 05:28:13 +0000


 


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.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
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.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
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Environment for learning programming using Mu: http://akkartik.name/post/mu

Run it from the `mu` directory:

  ```shell
  $ ./mu edit
  ```

This will load all the `.mu` files in this directory and then run the editor.
Press ctrl-c to quit. Press F4 to save your work (if a lesson/ directory
exists) and to run the contents of the sandbox editor on the right.

You can also run the tests for the environment:

  ```shell
  $ ./mu test edit
  ```

You can also load the files more explicitly by enumerating them all:

  ```shell
  $  ./mu edit/*.mu
  ```

This is handy if you want to run simpler versions of the editor so you can
stage your learning.

  ```shell
  $ ./mu edit/00[12]*.mu  # run a simple editor rather than the full environment
  ```

To see how the various 'layers' are organized, peek inside the individual
`.mu` files.

---

Appendix: keyboard shortcuts

  _moving and scrolling_
  - `ctrl-a` or `home`: move cursor to start of line
  - `ctrl-e` or `end`: move cursor to end of line
  - `ctrl-f` or `page-down`: scroll down by one page
  - `ctrl-b` or `page-up`: scroll up by one page
  - `ctrl-x`: scroll down by one line
  - `ctrl-s`: scroll up by one line
  - `ctrl-t`: scroll until current line is at top of screen

  _modifying text_
  - `ctrl-k`: delete text from cursor to end of line
  - `ctrl-u`: delete text from start of line until just before cursor
  - `ctrl-/`: comment/uncomment current line (using a special leader to ignore real comments https://www.reddit.com/r/vim/comments/4ootmz/_/d4ehmql)