* [NTG-context] Different behavior of \clf_lastypos vs \clf_lastxpos
@ 2023-09-17 1:26 Aditya Mahajan
2023-09-17 7:04 ` [NTG-context] " Max Chernoff
2023-09-17 7:05 ` Hans Hagen
0 siblings, 2 replies; 4+ messages in thread
From: Aditya Mahajan @ 2023-09-17 1:26 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Hi,
I am trying to debug an unexpected behavior with tikz reported on tex.se: https://tex.stackexchange.com/q/696136/323
The attached file shows what is going wrong (without using tikz). For some reason, there is an extra \relax written to file after `\the\numexp\clf_lastypos\relax` (there is no such relax after `\the\numexpr\clf_lastxpos\relax`). The test.pgf file is:
\macro {A}{23930350}{43358454.0\relax }
\macro {B}{39564274.0\relax }{14083538}
Any ideas on why is the extra \relax written after lastypos and how to fix that?
Aditya
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^ permalink raw reply [flat|nested] 4+ messages in thread* [NTG-context] Re: Different behavior of \clf_lastypos vs \clf_lastxpos 2023-09-17 1:26 [NTG-context] Different behavior of \clf_lastypos vs \clf_lastxpos Aditya Mahajan @ 2023-09-17 7:04 ` Max Chernoff 2023-09-17 7:18 ` Hans Hagen 2023-09-17 7:05 ` Hans Hagen 1 sibling, 1 reply; 4+ messages in thread From: Max Chernoff @ 2023-09-17 7:04 UTC (permalink / raw) To: ntg-context Hi Aditya, > For some reason, there is an extra \relax written to file after > `\the\numexp\clf_lastypos\relax` (there is no such relax after > `\the\numexpr\clf_lastxpos\relax`). The test.pgf file is: > > \macro {A}{23930350}{43358454.0\relax } \macro {B}{39564274.0\relax > }{14083538} > > Any ideas on why is the extra \relax written after lastypos and how to > fix that? \numexpr stops at the first non-expandable or non-digit token. If \clf_last[xy]pos expands to an integer, then that's the \relax, but if it expands to a float, then that's the decimal point. With Lua, adding, subtracting, or multiplying two integers will give you an integer, but dividing gives you a float. So somewhere in the backend, the vertical position is probably divided but the horizontal position is only added or subtracted. To fix this, change lines 2344--2345 of anch-pos.lmt from implement { name = "lastxpos", actions = function() context(jobpositions.lastx) end } implement { name = "lastypos", actions = function() context(jobpositions.lasty) end } to implement { name = "lastxpos", actions = function() context("%.0f", jobpositions.lastx) end } implement { name = "lastypos", actions = function() context("%.0f", jobpositions.lasty) end } Thanks, -- Max ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
* [NTG-context] Re: Different behavior of \clf_lastypos vs \clf_lastxpos 2023-09-17 7:04 ` [NTG-context] " Max Chernoff @ 2023-09-17 7:18 ` Hans Hagen 0 siblings, 0 replies; 4+ messages in thread From: Hans Hagen @ 2023-09-17 7:18 UTC (permalink / raw) To: ntg-context On 9/17/2023 9:04 AM, Max Chernoff wrote: > Hi Aditya, > >> For some reason, there is an extra \relax written to file after >> `\the\numexp\clf_lastypos\relax` (there is no such relax after >> `\the\numexpr\clf_lastxpos\relax`). The test.pgf file is: >> >> \macro {A}{23930350}{43358454.0\relax } \macro {B}{39564274.0\relax >> }{14083538} >> >> Any ideas on why is the extra \relax written after lastypos and how to >> fix that? > > \numexpr stops at the first non-expandable or non-digit token. If > \clf_last[xy]pos expands to an integer, then that's the \relax, but if > it expands to a float, then that's the decimal point. > > With Lua, adding, subtracting, or multiplying two integers will give you > an integer, but dividing gives you a float. So somewhere in the backend, > the vertical position is probably divided but the horizontal position is > only added or subtracted. > > To fix this, change lines 2344--2345 of anch-pos.lmt from > > implement { name = "lastxpos", actions = function() context(jobpositions.lastx) end } > implement { name = "lastypos", actions = function() context(jobpositions.lasty) end } > > to > > implement { name = "lastxpos", actions = function() context("%.0f", jobpositions.lastx) end } > implement { name = "lastypos", actions = function() context("%.0f", jobpositions.lasty) end } it's better to do some rounding earlier on Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | 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 / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
* [NTG-context] Re: Different behavior of \clf_lastypos vs \clf_lastxpos 2023-09-17 1:26 [NTG-context] Different behavior of \clf_lastypos vs \clf_lastxpos Aditya Mahajan 2023-09-17 7:04 ` [NTG-context] " Max Chernoff @ 2023-09-17 7:05 ` Hans Hagen 1 sibling, 0 replies; 4+ messages in thread From: Hans Hagen @ 2023-09-17 7:05 UTC (permalink / raw) To: Aditya Mahajan, mailing list for ConTeXt users On 9/17/2023 3:26 AM, Aditya Mahajan wrote: > Hi, > > I am trying to debug an unexpected behavior with tikz reported on tex.se: https://tex.stackexchange.com/q/696136/323 > > The attached file shows what is going wrong (without using tikz). For some reason, there is an extra \relax written to file after `\the\numexp\clf_lastypos\relax` (there is no such relax after `\the\numexpr\clf_lastxpos\relax`). The test.pgf file is: > > \macro {A}{23930350}{43358454.0\relax } > \macro {B}{39564274.0\relax }{14083538} > > Any ideas on why is the extra \relax written after lastypos and how to fix that? i'll round the values wrt relaxes, these can creep in as side effect of tex pushing back looked-ahead and not used tokens (there are wasy around this but it's not relevant here) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | 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 / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-09-17 7:20 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-09-17 1:26 [NTG-context] Different behavior of \clf_lastypos vs \clf_lastxpos Aditya Mahajan 2023-09-17 7:04 ` [NTG-context] " Max Chernoff 2023-09-17 7:18 ` Hans Hagen 2023-09-17 7:05 ` Hans Hagen
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