! err75_grave_parsing
! 4/29/19 ACM
! See issue 1927. Error parsing the grave-accent expr 
! when a previous command had qualifiers

let obs_yr1 = 1880
let obs_yr2 = 2014

! This succeeded
let/title="Observations (`obs_yr1`-`obs_yr2`)"/unit="#C" ts_obs = sst

let obs_yr1 = 1880
let obs_yr2 = 2014
def ax/t=1-jan-1880:1-jan-2015:`1/12`/unit=years/edge/cal=noleap tax_hist

! This failed with a syntax error
let/title="Observations (`obs_yr1`-`obs_yr2`)"/unit="#C" ts_obs = sst
