In my history view, when I look at some .htm files of my (e.g.) initial commit, they show up in the right pane as binary files, with some buttons "Preview 'After'", "Open 'Before'" (which is grayed out), and an "Open 'After'".
Below that I can see some sort of mini browser window (a la Preview that would show up when pressing the space bar in the finder).
Other .htm files in that same commit just show up with the number of lines added, and the source code shown.
Both types show a 'Reverse' button.
Why don't all my .htm files show up as plain text files, like they do in File Status view?