nitpick: avoid triple redirection inside loop, fdo#75264 related

Also, it's fdo#12345 instead of fdo12345 (just to provide better
"grep'ability").

Change-Id: Id1c1f849addcb96f71408ba38e2dde8e316271be
include parentheses replacement in functions' formula data, fdo#75264

... to actually make hitting Enter on a function tip work so the
parentheses are added and the cursor is placed in between and the
correct description is displayed.

Change-Id: I2cbe8f9e2b745a8331aeb8744b64d0baa1f0513e