Re: [BUG] italics run past where they should

[Alejandro Colomar]

Hi Branden,

On 8/17/22 13:01, G. Branden Robinson wrote:
> > $ GROFF_SGR=1 man membarrier
> >
> > with Debian's groff 1.22.4 triggers the bug in Sid, but not in stable.
> > What does this tell you?
>
> That I don't have enough information yet.
>
> Render the page directly with groff.
>
> (export GROFF_SGR=1; zcat $(man -w membarrier) | groff -Tutf8 -man > grotty.out)
>
> Use a text editor or hex dumper to confirm that SGR escape sequences are
> present in "grotty.out".
>
> Then view the file with a variety of pagers to see which, if any,
> misbehave.

Reproduced:

 1986  <$(man -w membarrier) groff -Tutf8 -man > grotty.out
 1987  less grotty.out
 1988  less -R grotty.out
 1989  batcat grotty.out


The page I used is not compressed, since it's installed from source. 
zcatting Debian's page should produce the same.

Both less and batcat reproduce the bug.  I attached the page so that you 
can inspect it (it would be interesting to know if your less(1) with my 
grotty.out reproduces the bug).  I;ll also show inline here the relevant 
part of the file:

$ grep SYS_membarrier <grotty.out | hd
00000000  20 20 20 20 20 20 20 1b  5b 31 6d 69 6e 74 20 73  | 
.[1mint s|
00000010  79 73 63 61 6c 6c 28 53  59 53 5f 6d 65 6d 62 61 
|yscall(SYS_memba|
00000020  72 72 69 65 72 2c 20 69  6e 74 20 1b 5b 34 6d 1b  |rrier, int 
.[4m.|
00000030  5b 32 32 6d 63 6d 64 1b  5b 32 34 6d 1b 5b 31 6d 
|[22mcmd.[24m.[1m|
00000040  2c 20 75 6e 73 69 67 6e  65 64 20 69 6e 74 20 1b  |, unsigned 
int .|
00000050  5b 34 6d 1b 5b 32 32 6d  66 6c 61 67 73 1b 5b 32 
|[4m.[22mflags.[2|
00000060  34 6d 1b 5b 31 6d 2c 20  69 6e 74 20 1b 5b 34 6d  |4m.[1m, int 
.[4m|
00000070  1b 5b 32 32 6d 63 70 75  5f 69 64 1b 5b 32 34 6d 
|.[22mcpu_id.[24m|
00000080  1b 5b 31 6d 29 3b 1b 5b  30 6d 0a                 |.[1m);.[0m.|
0000008b


Cheers,

Alex


--
Alejandro Colomar
<http://www.alejandro-colomar.es/>

grotty.out
Description: Text document

OpenPGP_signature
Description: OpenPGP digital signature