Re: [NTG-context] example of better linebreak with 2014.05.17 compared to 2014.07.07

2014-07-10 Thread Hans Hagen

On 7/10/2014 5:06 AM, Sanjoy Mahajan wrote:

Hans Hagen pra...@wxs.nl writes:


it can happen if patterns or fonts changed ...so, best make two small
test files and we can look into it with tracing


There's just one test file for both (see below).  I think I verified
that the texgyrepagella font is the same in both context minimals.  But
maybe the hyphenation patterns did change.


how does the tex file look


I made the following minimal example (same for both versions):

\setupbodyfont[palatino]
\showframe
\setuplayout[width=5.4286in]

\starttext

Let's see whether this estimate is reasonable.  According to the
plane's technical documentation, the 747-400's four engines together
can provide roughly 1~meganewton of thrust.

\stoptext


fyi:

\setupbackend[space=yes]

can help you around the wrong threshold for spaces in your viewer.

\setuptolerance[tolerant]

makes the paragraph look better ... i'm not sure what makes the 
difference in file


BT
/F1 11.955168 Tf 1 0 0 1 263.3079 760.2084 Tm [0053]TJ
1 0 0 1 70.867 702.3845 Tm 
[00480033006A02150063-404006300330033-405007300400033006A-15004000330061-405006A-15004000430063-4050033006314006A0043004C001D006A0033-40300430063-40500610033001D00630052004E001D0024004900330059-798001C34002C002C005200611500300043004E003C-404006A90052-404006A-1500400033-40400550049001D004E003302150063]TJ
1 0 0 1 70.867 687.3545 Tm 
[006A0033002C0040004E0043002C001D0049-30200300052002C006E004C0033004E006A001D006A00430052004E002E-315006A-1500400033-3020065003A00650041003A007A007A02150063-3020038140052006E0061-3020033004E003C0043004E00330063-302006A90052003C200033006A-14004000330061-302002C001D004E-302005500610052240071004300300033]TJ
1 0 0 1 70.867 672.3244 Tm 
[00610052006E003C00400049250077-2500053-250004C0033003C15001D004E0033100073006A100052004E-25000520038-250006A-1500400061-10006E006315006A0059]TJ

ET

BT
/F1 11.955168 Tf 1 0 0 1 263.3079 760.2084 Tm [0053]TJ
1 0 0 1 70.867 702.3845 Tm 
[00480033006A0215250063-201006300330033-201007300400033006A-15004000330061-26A-15004000430063-2010033006314006A0043004C001D006A0033-2430063-20100610033001D00630052004E001D0024004900330059-317001C34002C002C005200611500300043004E003C-26A90052-26A-1500400033-20100550049001D004E00330215240063-26A0033002C00400041]TJ
1 0 0 1 70.867 687.3545 Tm 
[004E0043002C001D0049-16600300052002C006E004C0033004E006A001D006A00430052004E002E-184006A-1500400033-1660065003A00650041003A007A007A0215240063-1660038140052006E0061-1660033004E003C0043004E00330063-166006A90052003C200033006A-14004000330061-167002C001D004E-167005500610052250071004300300033-16600610052006E003C00400049240077]TJ
1 0 0 1 70.867 672.3244 Tm 
[0053-250004C0033003C15001D004E0033100073006A100052004E-25000520038-250006A-1500400061-10006E006315006A0059]TJ

ET

looks like a difference in font (kerning)

Hans

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
 | www.pragma-pod.nl
-
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___


[NTG-context] example of better linebreak with 2014.05.17 compared to 2014.07.07

2014-07-09 Thread Sanjoy Mahajan
Out of curiosity and as a ConTeXt stress test, I installed 2014.07.07
MkIV and recompiled my book with it, and looked at the pixel-by-pixel
comparison between it and the version compiled with 2014.05.17.

There were many changes.  I am going through them one at a time in case
any could be bugs in luatex or context.  (I noticed several good changes
where pages fit more precisely into their height.)

Here is a change that might be a bug.  It uses the following minimal
example:

\setupbodyfont[palatino]
\showframe
\setuplayout[width=5.4286in]

\starttext

Let's see whether this estimate is reasonable.  According to the
plane's technical documentation, the 747-400's four engines together
can provide roughly 1~meganewton of thrust.

\stoptext

With 2014.05.17, the linebreaks are as follows, with no overfull boxes:

  Let's see whether this estimate is reasonable. According to the plane's
  technical documentation, the 747-400's four engines together can provide
  roughly 1 meganewton of thrust.

With 2014.07.07, the linebreaks are as follows, but with an overfull box:

  Let's see whether this estimate is reasonable. According to the plane's tech-
  nical documentation, the 747-400's four engines together can provide roughly
  1 meganewton of thrust.  

The roughly on the second line protrudes a good way into the margin.
From the log file:

  Overfull \hbox (8.80678pt too wide) in paragraph at lines 7--10
  \3palatino-12pt-rm-tf-0--0 ni-cal doc-u-men-ta-tion, the 747-400’s four 
en-gines to-gether can pro-vide roughly

Both runs use luatex 0.79.1 (svn rev 5033), which I compiled by hand and
then did 'context --make' to regenerate the formats.

Is this change in linebreaking intended, or could it be an unintended
consequence of another change (and therefore maybe problematic)?

Perhaps related, the PDF files behave differently with copying and
pasting.  Copying the paragraph from the 2014.05.17 file, I get spaces
between the words.  Copying from the 2014.07.07 file, I get no spaces
between the words (using mupdf).  (The difference may be due to the
smaller interword spaces, whose size may have fallen below a threshold
that mupdf uses.)

I've attached the uncompressed PDFs (each about 14K).

-Sanjoy



test_region20140517.pdf
Description: version with 2014.05.17


test_region20140707.pdf
Description: version with 2014.07.07
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___

Re: [NTG-context] example of better linebreak with 2014.05.17 compared to 2014.07.07

2014-07-09 Thread Hans Hagen

On 7/9/2014 12:39 PM, Sanjoy Mahajan wrote:

Out of curiosity and as a ConTeXt stress test, I installed 2014.07.07
MkIV and recompiled my book with it, and looked at the pixel-by-pixel
comparison between it and the version compiled with 2014.05.17.

There were many changes.  I am going through them one at a time in case
any could be bugs in luatex or context.  (I noticed several good changes
where pages fit more precisely into their height.)

Here is a change that might be a bug.  It uses the following minimal
example:

\setupbodyfont[palatino]
\showframe
\setuplayout[width=5.4286in]

\starttext

Let's see whether this estimate is reasonable.  According to the
plane's technical documentation, the 747-400's four engines together
can provide roughly 1~meganewton of thrust.

\stoptext

With 2014.05.17, the linebreaks are as follows, with no overfull boxes:

   Let's see whether this estimate is reasonable. According to the plane's
   technical documentation, the 747-400's four engines together can provide
   roughly 1 meganewton of thrust.

With 2014.07.07, the linebreaks are as follows, but with an overfull box:

   Let's see whether this estimate is reasonable. According to the plane's tech-
   nical documentation, the 747-400's four engines together can provide roughly
   1 meganewton of thrust.

The roughly on the second line protrudes a good way into the margin.
 From the log file:

   Overfull \hbox (8.80678pt too wide) in paragraph at lines 7--10
   \3palatino-12pt-rm-tf-0--0 ni-cal doc-u-men-ta-tion, the 747-400’s four 
en-gines to-gether can pro-vide roughly

Both runs use luatex 0.79.1 (svn rev 5033), which I compiled by hand and
then did 'context --make' to regenerate the formats.

Is this change in linebreaking intended, or could it be an unintended
consequence of another change (and therefore maybe problematic)?


it can happen if patterns or fonts changed ...so, best make two small 
test files and we can look into it with tracing



Perhaps related, the PDF files behave differently with copying and
pasting.  Copying the paragraph from the 2014.05.17 file, I get spaces
between the words.  Copying from the 2014.07.07 file, I get no spaces
between the words (using mupdf).  (The difference may be due to the
smaller interword spaces, whose size may have fallen below a threshold
that mupdf uses.)

I've attached the uncompressed PDFs (each about 14K).


how does the tex file look

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
 | www.pragma-pod.nl
-
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___


Re: [NTG-context] example of better linebreak with 2014.05.17 compared to 2014.07.07

2014-07-09 Thread Sanjoy Mahajan
Hans Hagen pra...@wxs.nl writes:

 it can happen if patterns or fonts changed ...so, best make two small 
 test files and we can look into it with tracing

There's just one test file for both (see below).  I think I verified
that the texgyrepagella font is the same in both context minimals.  But
maybe the hyphenation patterns did change.

 how does the tex file look

I made the following minimal example (same for both versions):

\setupbodyfont[palatino]
\showframe
\setuplayout[width=5.4286in]

\starttext

Let's see whether this estimate is reasonable.  According to the
plane's technical documentation, the 747-400's four engines together
can provide roughly 1~meganewton of thrust.

\stoptext
___
If your question is of interest to others as well, please add an entry to the 
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___