Preserve capital Umlauts during cleanup

[grimes2]

Ägypten in title field results in {"{A}}gypten. This should be the correct syntax, but the result of the pdf is ägypten (field title only!). {{"{A}}}gypten produces Ägypten. This might be a bibtex bug, because the author field works without additional braces.

[oscargus]

Oh, yeah. I was thinking of that earlier in another discussion. If I recall it correctly, there's a parity behavior, so one needs an odd number of brackets to keep the case.

[grimes2]

I've checked the syntax: ü is {"{u}}, Ü is {{"{U}}} (to preserve capital letter two additional curley braces are needed). This bug should be fixed.

[lenhard]

@oscargus What is the status of this issue?

[oscargus]

One would need to add an extra set of {} around all capital entries (not characters) in the huge array, soon to be renamed in #841 .

[stefan-kolb]

Has this been addressed in #841?

[oscargus]

Not consistently, no. There may be capital letters that doesn't have double braces around them.