depricated syntax warning eating input buffer

[<pl...@pi...>]

Hi,

using gnuplot v5 built yesterday I find the fit "Deprecated syntax" 
warning breaks input.


I linux primary buffer ( mouse 3 click to paste ) to copy data from a 
text as input to gnuplot's special filename '-'


fit [0:fit_end] f_peak2(x) '-' using 1:2 via FWHM2,a
#4 3.5
10 3.47 # 3.5
25 3.79  #4.43
50  4.45  #6.78
#100 11.755  # 60.9+56.65
#100 11.21
200 4.48 #21.96
e

Instead of just printing the warning and plotting as it did with 4.6 it 
looses the rest of the input after the "fit" command and sits there with 
the data input prompt.


gnuplot> fit [0:fit_end] f_peak2(x) '-' using 1:2 via FWHM2,a
fit: Deprecated syntax. Consider using the 'noerror' option, see `help fit`.
input data ('e' ends) >


I assume the intention was for it to work as before, just with the 
warning printed.


/Peter.