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Bug#975687: xterm: loses text lines, even descenders from some lines



On Fri, Nov 27, 2020 at 12:04:07AM +0000, Thorsten Glaser wrote:
> Hi Thomas,
> 
> >If you're going to compile it, the debug-trace can be useful
> >(--enable-trace).  If not, the -report-fonts option is helpful.
> 
> I hadn’t recompiled, at least not with actual changes.
> The -report-fonts output is attached, fNorm is the one
> in question.
> 
> I did a little bisecting: Debian’s 360-1 did not have
> the bug, 361-1 did, and when recompiling 360-1 unchanged
> in a current unstable chroot, it also doesn’t have the
> bug, so it’s not something else that changed.

sounds promising - 
 
> Looking at debian/patches/ in 361-1 it also doesn’t change
> any of the code, so I guess it’s some upstream change.
> 
> >If I can reproduce it, I'll see what I can do.
> 
> If not but you still have patches I could test, send them
> and I’ll apply them and rebuild locally. If you need the
> trace, I’ll also do that, but not tonight…

fwiw

https://invisible-island.net/personal/git-exports.html
https://github.com/ThomasDickey/xterm-snapshots


> 
> bye,
> //mirabilos
> -- 
> 21:12⎜<Vutral> sogar bei opensolaris haben die von der community so
> ziemlich jeden mist eingebaut │ man sollte unices nich so machen das
> desktopuser zuviel intresse kriegen │ das macht die code base kaputt
> 21:13⎜<Vutral:#MirBSD> linux war früher auch mal besser :D

> Script started on 2020-11-27 00:46:29+01:00 [TERM="screen" TTY="/dev/pts/15" COLUMNS="113" LINES="34"]
> tglase@tglase-nb:~ $ /usr/bin/xterm +sb -fg black -geom 90x11+475+637 -report-fonts -bg cornflowerblue -e tail 
+sb -fg black -geom 90x11+475+637 -report-fonts -bg cornflowerblue -e tail                                     <-F /var/log/syslog
> Loaded VTFonts(default)
> 	fNorm: -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 61413
> 		present-chars: 4123
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    22
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    6
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 5
> 			rbearing: 6
> 			width:    6
> 			ascent:   11
> 			descent:  2
> 	fBold: -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 61413
> 		present-chars: 4123
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    22
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    6
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 5
> 			rbearing: 6
> 			width:    6
> 			ascent:   11
> 			descent:  2
> 	fWide: -misc-fixed-medium-r-normal-ja-13-120-75-75-c-120-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 46328
> 		present-chars: 19208
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    23
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    12
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 11
> 			rbearing: 12
> 			width:    12
> 			ascent:   11
> 			descent:  2
> 	fWBold: -misc-fixed-medium-r-normal-ja-13-120-75-75-c-120-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 46328
> 		present-chars: 19208
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    23
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    12
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 11
> 			rbearing: 12
> 			width:    12
> 			ascent:   11
> 			descent:  2
> Loaded VTFonts(default)
> 	fNorm: -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 61413
> 		present-chars: 4123
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    22
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    6
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 5
> 			rbearing: 6
> 			width:    6
> 			ascent:   11
> 			descent:  2
> 	fBold: -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 61413
> 		present-chars: 4123
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    22
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    6
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 5
> 			rbearing: 6
> 			width:    6
> 			ascent:   11
> 			descent:  2
> 	fWide: -misc-fixed-medium-r-normal-ja-13-120-75-75-c-120-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 46328
> 		present-chars: 19208
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    23
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    12
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 11
> 			rbearing: 12
> 			width:    12
> 			ascent:   11
> 			descent:  2
> 	fWBold: -misc-fixed-medium-r-normal-ja-13-120-75-75-c-120-iso10646-1
> 		all chars:     no
> 		default char:  0
> 		direction:     0
> 		ascent:        11
> 		descent:       2
> 		first char:    0
> 		last char:     65535
> 		maximum-chars: 65536
> 		missing-chars: 46328
> 		present-chars: 19208
> 		min_byte1:     0
> 		max_byte1:     255
> 		properties:    23
> 		min_bounds:
> 			lbearing: 0
> 			rbearing: 0
> 			width:    12
> 			ascent:   -1
> 			descent:  -10
> 		max_bounds:
> 			lbearing: 11
> 			rbearing: 12
> 			width:    12
> 			ascent:   11
> 			descent:  2
> ^C2|tglase@tglase-nb:~ $ ^D
> 
> Script done on 2020-11-27 00:47:13+01:00 [COMMAND_EXIT_CODE="2"]


-- 
Thomas E. Dickey <dickey@invisible-island.net>
https://invisible-island.net
ftp://ftp.invisible-island.net

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