Mac – How to find out current font used in the Emacs

It's a bit old now this question, but I came here via Google, and someone else might also. My solution was to create a Preflight profile (Acrobat 9 Pro) which errored on font information. Clicking on the font name in the results then jumps to the page and highlights the text. Downside is that you get a list of all fonts on all pages organised by page rather than by font name, but it provided a solution for me.

1) Create a new Custom preflight profile Advanced|Preflight|Options|Create New Preflight Profile

2) Give the profile a name (Fontfinder, say)

3) In the left window of the dialog click "Custom checks"

4) In the right window of the dialog below the blank box click the plus symbol to create a new check and include in current profile

5) Click "text" in the Group, the bottom property is "Text size". Select this and click "Add"

6) The pane below now has more options. Click on the drop down options probably labelled "equal to" and select "less than"

7) Enter a large value in the Number field. I entered 500

8) Top left of the dialog when check fires report as... and enter something like Text size 500 pt or less and click OK. There should be a new custom check in the pane with a red cross beside it. If the cross is not red, click on the check label, and select "error" below the pane

Repeat the steps above for another error check, but changing the option for 500 to "greater than or equal to", and Check fires report as Text 500 pt or greater

9) Click OK in the Edit Profile Dialog

10) Run the profile on your PDF

I set the font to error on a large point size so that all of the errors would report in a group. The second check is simply to catch any font larger than that. I suppose you could check for pt size 50000 and have the same result.

There isn't the concept of a current theme, and indeed, multiple themes can be applied in sequence to additively define the set of active faces. Support for theming was added into the latest Emacs versions (see M-x customize-theme), and there's still the option to "Select more than one theme at a time".

In short, when you activate a theme, you're not switching to that theme, but rather applying the changes specified in the theme to the faces and variables it lists.

All customizations which aren't explicitly placed in a named theme are actually put into the hidden user theme, so there's always at least one active theme. The other currently enabled themes are listed in the variable custom-enabled-themes.