Version: 4.6.0

What I am trying to do:
I added size information after a tab character at the end of each locatedb entry (this allows me to use locate to find files by size).

The exact command lines I was using: (up to absolute paths)

$ mkdir test-locatedb && cd test-locatedb
$ touch a b c d e f g
$ du -a | awk -v 'OFS=\t' '{print $2,$1}' | /path/to/frcode > test.locatedb
$ /path/to/locate --database=test.locatedb a
./test.locatedb?1
./a?1
$ locate --database=test.locatedb a | cat
./a     1
./test.locatedb 1
$ /path/to/locate --version
locate (GNU findutils) 4.6.0
...

What I expected to happen:
I expect the tab character to be displayed when `locate` outputs results to the terminal.

What did happen:
`locate` replaces tabs with question marks ("?")

More information:
Output piped via `cat` should be identical to direct terminal output. Alternatively, the behavior should be documented in the `man` page.

Relevant code:

• qmark.c
• printquoted.c