[Ariel Linden]

Thanks, Andrew. I don't think abbreviated depvar names will affect what I am doing. I just tried it and it seems to work fine. I'll try to break it...

sysuse auto
logit for mp weight turn

local wanted= ustrregexra(ustrregexra("`e(cmdline)'", "(\b`e(cmd)'\b|\b`e(depvar)'\b)", ""), "^(.+?)(\bif\b|\bin\b|\,)(.*)", "$1")
di "`wanted'"

result:

 for mp weight turn

[Andrew Musau]

for mp weight turn

Abbreviated RHS variables are not an issue. In your example, "for" or "foreign", the outcome, does not drop out. Unless you want to keep it. If you want to keep only the RHS variables, I would suggest:

sysuse auto, clear
logit for mp weight turn
local wanted= ustrregexra(ustrregexra("`e(cmdline)'", "(\b`e(cmd)'\b|\b`=word("`e(cmdline)'", 2)'\b)", ""), "^(.+?)(\bif\b|\bin\b|\,)(.*)", "$1")
di "`wanted'"

Note that

Res.:

. local wanted= ustrregexra(ustrregexra("`e(cmdline)'", "(\b`e(cmd)'\b|\b`=word("`e(cmdline)'", 2)'\b)", ""), "^(.+?)(\bif\b|\bin\b|\
> ,)(.*)", "$1")

. 
. di "`wanted'"
  mp weight turn

[Ariel Linden]

Ahh, I see it now! Thank you for this, Andrew!