To search for a particular file, press Control + P (or Command + P on a Mac) and type the search term. The source pane will display a list of all matching files as you type. You can use the up and down arrows to move through the list, and Return to open the file you want:
To search for a particular substring in the file currently loaded into the source pane, press Control + F (or Command + F on a Mac) while the source pane is focused. Press Return to search. The debugger will display the number of matches in the code and highlight each result:
You can further simplify the search by filtering the list. Enter text into the text input above the list to limit the results in the Outline. For example, if I enter "load" when viewing the above list, I get the following:
Only the functions with load in their name are shown.
This feature may not seem terribly useful when searching a file with a handful of functions in it but when you are searching through a file with dozens of functions, it comes in handy.
You can also search for a string in all of the files included in the currently opened project. Press Shift + Ctrl + F (Windows and Linux) or Shift + Cmd + F (macOS) and then enter the string you are trying to find.
If the string exists in any of the files in the project, the search will return a list showing a list by file and line number.
Click on any entry in the list to go directly to the line in the file where the string occurs.