LilyPond: how to avoid spaces around \bold{}?

Question

It seems like \bold markup in LilyPond automatically adds surrounding spaces. Is there a way to avoid it?

Here is an example:

You can clearly see spaces between the brackets and the inside text.

Here is the code:

\version "2.22.1"
\language "italiano"

right = \relative do'' {
    \key sol \minor
    \tempo \markup {\normal-text {Andante con moto [\bold{Неторопливо}]}}
    <fa, sib re>2 <sol sib sol'>2 (
    <fa re' fa>4 <sol do mib>2.)
}

left = \relative do' {
    \key sol \minor
    <sib, sib'>2 <mib, mib'>2 (
    <sib sib'>4 <do do'>2.)
}

\score {
    \new PianoStaff <<
        \new Staff = "right" \right
        \new Staff = "left" { \clef bass \left }
    >>
}

Answer 1

Use the concatenation function \concat{ }:

\concat{[\bold{Неторопливо}]}

---

Another option would be to just put the bold function outside of the brackets:

\bold{{[Неторопливо]}}

but this would obviously make the brackets bold too.
(I assume this is not what you want)