With the nice scripts from @mekkablue I can export kerning as a .csv file.
Is it possible to import such a file (or other) ? I sometimes like to alter the list in an external editor like textwrangler.
You can import the kerning from a UFO with File > Import > Metrics.
Not as a txt file or other flat files ?
You could have a look at the .glpyhs file itself.
We are working on a im/export solution for spacing/kerning. But I can’t find some time for it.
Hi Georg, of course !
The stuff you all (team) are doing with G2 is very nice ! Keep up the good work !
Yes, try opening a .glyphs file or an .ufo file in your text editor of choice. You can import that into Glyphs later with File > Import Metrics.
The CSV is for viewing in a spreadsheet app like Excel or Numbers, for finding omissions and mistakes. I have never been asked for the import script though. You really want to edit the CSV? Try the above suggestion first and let me know.
Ps: hoezo textwrangler? Textmate en Sublime kunnen verschillende regels tegelijk bewerken.
When using FL I was used to edit the metrics file. I had some scripts that worked better than the import/export function of FL.
I needed it for a project I am working on now, where I wanted to copy the uppercase kerning to smallcaps.
Textwrangler ? Got used to it in the long time. I only use it for preparing metrics files, typing features and preparing kerning strings.
I am not a coder or script writer 
So, what you really need is actually a script that copies uppercase kerning to small cap kerning. Let’s see what I can do about that.
No problem, can be fixed. Read these, please.
Well, yes, this time. But I often do also other stuff.
Ik ben blij dat je mij wilt helpen, maar intussen zijn de kleinkapitalen gekerned 
Gebruik jouw waardevolle tijd voor waardevolle dingen !
Toch bedankt !!