A FilterName as the register spells it, as far as that can be told without its column
list: Unicode NFC, no surrounding whitespace, inner whitespace runs as one space. The
register matches FilterNames exactly and silently ignores one it doesn't know, so
Energieträger typed with a decomposed "ä" (macOS input: a + U+0308) or with a space
after ~and~ returned the unfiltered set (live 2026-10-05: 9 562 366 instead of 6 545 851).
The register's own names are NFC, never padded and never hold two spaces in a row, so this
can't turn a valid name into another one.
A FilterName as the register spells it, as far as that can be told without its column list: Unicode NFC, no surrounding whitespace, inner whitespace runs as one space. The register matches FilterNames exactly and silently ignores one it doesn't know, so
Energieträgertyped with a decomposed "ä" (macOS input:a+ U+0308) or with a space after~and~returned the unfiltered set (live 2026-10-05: 9 562 366 instead of 6 545 851). The register's own names are NFC, never padded and never hold two spaces in a row, so this can't turn a valid name into another one.