example of better linebreak with 2014.05.17 compared to 2014.07.07
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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 \3>palatino-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
![](https://secure.gravatar.com/avatar/49e63acb01f2ca80efce7eed08310ce8.jpg?s=120&d=mm&r=g)
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 \3>palatino-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 -----------------------------------------------------------------
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Hans Hagen
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
![](https://secure.gravatar.com/avatar/49e63acb01f2ca80efce7eed08310ce8.jpg?s=120&d=mm&r=g)
On 7/10/2014 5:06 AM, Sanjoy Mahajan wrote:
Hans Hagen
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>-404<006300330033>-405<007300400033006A>-15<004000330061>-405<006A>-15<004000430063>-405<00330063>14<006A0043004C001D006A0033>-403<00430063>-405<00610033001D00630052004E001D0024004900330059>-798<001C>34<002C002C00520061>15<00300043004E003C>-404<006A>9<0052>-404<006A>-15<00400033>-404<00550049001D004E003302150063>]TJ 1 0 0 1 70.867 687.3545 Tm [<006A0033002C0040004E0043002C001D0049>-302<00300052002C006E004C0033004E006A001D006A00430052004E002E>-315<006A>-15<00400033>-302<0065003A00650041003A007A007A02150063>-302<0038>14<0052006E0061>-302<0033004E003C0043004E00330063>-302<006A>9<0052003C>20<0033006A>-14<004000330061>-302<002C001D004E>-302<005500610052>24<0071004300300033>]TJ 1 0 0 1 70.867 672.3244 Tm [<00610052006E003C00400049>25<0077>-250<0053>-250<004C0033003C>15<001D004E0033>10<0073006A>10<0052004E>-250<00520038>-250<006A>-15<00400061>-10<006E0063>15<006A0059>]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 [<00480033006A0215>25<0063>-201<006300330033>-201<007300400033006A>-15<004000330061>-200<006A>-15<004000430063>-201<00330063>14<006A0043004C001D006A0033>-200<00430063>-201<00610033001D00630052004E001D0024004900330059>-317<001C>34<002C002C00520061>15<00300043004E003C>-200<006A>9<0052>-200<006A>-15<00400033>-201<00550049001D004E00330215>24<0063>-200<006A0033002C00400041>]TJ 1 0 0 1 70.867 687.3545 Tm [<004E0043002C001D0049>-166<00300052002C006E004C0033004E006A001D006A00430052004E002E>-184<006A>-15<00400033>-166<0065003A00650041003A007A007A0215>24<0063>-166<0038>14<0052006E0061>-166<0033004E003C0043004E00330063>-166<006A>9<0052003C>20<0033006A>-14<004000330061>-167<002C001D004E>-167<005500610052>25<0071004300300033>-166<00610052006E003C00400049>24<0077>]TJ 1 0 0 1 70.867 672.3244 Tm [<0053>-250<004C0033003C>15<001D004E0033>10<0073006A>10<0052004E>-250<00520038>-250<006A>-15<00400061>-10<006E0063>15<006A0059>]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 -----------------------------------------------------------------
participants (2)
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Hans Hagen
-
Sanjoy Mahajan