Vertical line as a baroque articulation mark

This short vertical line placed above the note is commonly used in baroque music. Its meaning can vary, but generally indicates notes that should be played with more “weight”. The following example demonstrates how to achieve such a notation.

\version "2.24"

upline =
\tweak stencil   
  #(lambda (grob) 
    (grob-interpret-markup grob #{ \markup \draw-line #'(0 . 1) #}))
  \stopped

\relative c' {
  a'4^\upline a( c d')_\upline
}