Pharo Script of the Day: Open a line-numbered text editor

This is the matching code in Pharo 6.x for the Bash one-liner to view a file with line numbers:

cat -n /path/to/file | less

The simplest way to open an viewer in Pharo is to inspect the contents of the file:

'/path/to/file' asFileReference contents.

However you wouldn't see the line numbers by default. If for some reason you also want to avoid the inspector/explorer tool, you may use the following snippet:

StandardWindow new
 addMorph: (
  RubScrolledTextMorph new 
   withLineNumbers;
   appendText: '/path/to/file' asFileReference contents)
 fullFrame: (0@0 corner: 1@1) asLayoutFrame;
 openInWorld.

You can also open a more full-featured text editor with the Rubric example class method:

RubWorkspaceExample open.