bugGNU troff - Bugs: bug #63119, [pic] arc chop fails to chop


bug #63119: [pic] arc chop fails to chop

Submitter:  G. Branden Robinson <gbranden>
Submitted:  Wed 28 Sep 2022 01:27:24 AM UTC
Category:  Preprocessor pic Severity:  3 - Normal
Item Group:  Incorrect behaviour Status:  Confirmed
Privacy:  Public Assigned to:  None
Open/Closed:  Open Planned Release:  None
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Wed 28 Sep 2022 01:27:24 AM UTC, original submission:  

Romina Czyborra reported to the Debian Project:

$ groff -p -ms -P -bg -P red -X <<.
SW: circle "SW"
S:  circle "S"  at SW+(2,0)
SE: circle "SE" at SW+(4,0)
N:  circle "N"  at SW+(2,3.464)
NW: circle "NW" at SW+(1,1.732)
NE: circle "NE" at SW+(3,1.732)
C:  circle "C"  at SW+(2,1.155)
arc chop -> radius 1.155 cw from NW to NE
arc chop -> radius 1.155 cw from NE to S
arc chop -> radius 1.155 cw from S to NW
line chop -> from C to S

has gpic's line beautifully chop outside of the circles but not arc!

My educated guess would be that 2020's gpic is simply lacking code to
calculate the circles' intersection points.

G. Branden Robinson <gbranden>
Project Administrator


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