Quick Filter
File → Quick Filter… (Ctrl+F) narrows
the current list to the rows containing some text. It is not
case-sensitive, and it matches anything in the columns you can see.
Leave the box empty to clear the filter.
While a filter is on, the status bar has a filter item saying what it
is and how many rows match, for example “Filter: ‘braille’ (4/100)”.
Escape in the list clears it, and the status bar says
“Filter cleared”. Switching to another view or repository clears it too,
since a filter for issues means nothing in the branches list.
The filter only looks at what has already loaded. To search further
back, load more with Ctrl++, or for issues and pull
requests use View → State or a label, which ask
GitHub.
With a filter on, every key acts on the row you are on:
Enter, F, C, O,
G, Delete and the rest, and the details panel
always shows that same row.