[bug #45502] .if, .ie, .el parsing incompatible with V7 Unix & Heirloom troff

[G. Branden Robinson]

Follow-up Comment #4, bug #45502 (group groff):

Input:


$ cat truncated-if.roff 
.if 1
.tm true
.if !0
.tm also true
.ie 0
.tm startlingly true
.el
.tm unsurprisingly false
.pl \n(nlu


Output (Unix V7 nroff, DWB 3.3 nroff, Heirloom Doctools nroff):


$ nroff truncated-if.roff

true

also true
startlingly true

unsurprisingly false
$


Output (_groff_):


$ nroff EXPERIMENTS/truncated-if.roff
true
also true
unsurprisingly false



$




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