Create test of text direction (luatex)LuaTeX bug with bold italic text?align* environment left-aligned with LuaTeX and RTL math directionUnicode, right to left characters in command namesCan LuaTeX create HTML?LuaTeX RTL text: Wrong horizontal spacing in headlinesText direction in table Arabic babelMeaning of LTL directionArabic Right to Left using LuatexReverse direction of writing automatically with RTL scriptCreate a Table with Luatex
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Create test of text direction (luatex)
LuaTeX bug with bold italic text?align* environment left-aligned with LuaTeX and RTL math directionUnicode, right to left characters in command namesCan LuaTeX create HTML?LuaTeX RTL text: Wrong horizontal spacing in headlinesText direction in table Arabic babelMeaning of LTL directionArabic Right to Left using LuatexReverse direction of writing automatically with RTL scriptCreate a Table with Luatex
With luatex there is textdir to change text direction and tex.textdir which give string representing text direction.
I have created this macro to test text direction which supposedly gives TLT inside left to right context and TRT inside right to left context, but my macro does not give the desired result
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
edefdirTLT
deftestdirdirectluatex.print(tex.textdir)
deffooifxdirtestdir TLT else TRT fi
begindocument
%textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
macros luatex expansion right-to-left
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
add a comment |
With luatex there is textdir to change text direction and tex.textdir which give string representing text direction.
I have created this macro to test text direction which supposedly gives TLT inside left to right context and TRT inside right to left context, but my macro does not give the desired result
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
edefdirTLT
deftestdirdirectluatex.print(tex.textdir)
deffooifxdirtestdir TLT else TRT fi
begindocument
%textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
macros luatex expansion right-to-left
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
2
ifxdoes no expansion and only looks at the first level expansion when comparing two macros.
– egreg
Apr 2 at 10:49
add a comment |
With luatex there is textdir to change text direction and tex.textdir which give string representing text direction.
I have created this macro to test text direction which supposedly gives TLT inside left to right context and TRT inside right to left context, but my macro does not give the desired result
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
edefdirTLT
deftestdirdirectluatex.print(tex.textdir)
deffooifxdirtestdir TLT else TRT fi
begindocument
%textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
macros luatex expansion right-to-left
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
With luatex there is textdir to change text direction and tex.textdir which give string representing text direction.
I have created this macro to test text direction which supposedly gives TLT inside left to right context and TRT inside right to left context, but my macro does not give the desired result
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
edefdirTLT
deftestdirdirectluatex.print(tex.textdir)
deffooifxdirtestdir TLT else TRT fi
begindocument
%textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
macros luatex expansion right-to-left
macros luatex expansion right-to-left
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
edited Apr 2 at 11:19
Salim Bou
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
asked Apr 2 at 10:28
Salim BouSalim Bou
11.6k11442
11.6k11442
2
ifxdoes no expansion and only looks at the first level expansion when comparing two macros.
– egreg
Apr 2 at 10:49
add a comment |
2
ifxdoes no expansion and only looks at the first level expansion when comparing two macros.
– egreg
Apr 2 at 10:49
2
2
ifx does no expansion and only looks at the first level expansion when comparing two macros.– egreg
Apr 2 at 10:49
ifx does no expansion and only looks at the first level expansion when comparing two macros.– egreg
Apr 2 at 10:49
add a comment |
2 Answers
2
active
oldest
votes
ifx only looks at the first level expansion when comparing two control sequences and cannot compare strings.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
NewExpandableDocumentCommandifdirTLTmm
str_if_eq:eeTF TLT lua_now:n tex.print(tex.textdir)
#1
#2
ExplSyntaxOff
begindocument
textdir TLT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
textdir TRT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:55
egregegreg
732k8919303253
add a comment |
You need to expand the directlua before the test. E.g.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
cs_generate_variant:Nntl_if_eq:nnTF xn
deffootl_if_eq:xnTFdirectluatex.print(tex.textdir)TLTTLTTRT
ExplSyntaxOff
begindocument
%
foo ; directluatex.print(tex.textdir)
textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
You can at first expand the command withedeftmpadirectlua ...and then useifxtmpadirbut expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)
– Ulrike Fischer
Apr 2 at 12:42
The expansion should come just before the test like thisdeffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fiFor the LaTeX3 syntax I find it a bit difficult.
– Salim Bou
Apr 2 at 13:22
@SalimBou Just do the comparison in Lua.directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")
– Henri Menke
2 days ago
@HenriMenke I would like to createifconditional which test the text direction to change some tex dimensions not just to printTLTorTRTlike thisif<text direction is TLT> do this else do that fi
– Salim Bou
2 days ago
|
show 1 more comment
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
ifx only looks at the first level expansion when comparing two control sequences and cannot compare strings.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
NewExpandableDocumentCommandifdirTLTmm
str_if_eq:eeTF TLT lua_now:n tex.print(tex.textdir)
#1
#2
ExplSyntaxOff
begindocument
textdir TLT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
textdir TRT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:55
egregegreg
732k8919303253
add a comment |
ifx only looks at the first level expansion when comparing two control sequences and cannot compare strings.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
NewExpandableDocumentCommandifdirTLTmm
str_if_eq:eeTF TLT lua_now:n tex.print(tex.textdir)
#1
#2
ExplSyntaxOff
begindocument
textdir TLT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
textdir TRT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:55
egregegreg
732k8919303253
add a comment |
ifx only looks at the first level expansion when comparing two control sequences and cannot compare strings.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
NewExpandableDocumentCommandifdirTLTmm
str_if_eq:eeTF TLT lua_now:n tex.print(tex.textdir)
#1
#2
ExplSyntaxOff
begindocument
textdir TLT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
textdir TRT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:55
egregegreg
732k8919303253
ifx only looks at the first level expansion when comparing two control sequences and cannot compare strings.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
NewExpandableDocumentCommandifdirTLTmm
str_if_eq:eeTF TLT lua_now:n tex.print(tex.textdir)
#1
#2
ExplSyntaxOff
begindocument
textdir TLT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
textdir TRT
ifdirTLTTLTTRT; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:55
egregegreg
732k8919303253
answered Apr 2 at 10:55
egregegreg
732k8919303253
answered Apr 2 at 10:55
egregegreg
732k8919303253
answered Apr 2 at 10:55
egregegreg
732k8919303253
732k8919303253
add a comment |
add a comment |
You need to expand the directlua before the test. E.g.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
cs_generate_variant:Nntl_if_eq:nnTF xn
deffootl_if_eq:xnTFdirectluatex.print(tex.textdir)TLTTLTTRT
ExplSyntaxOff
begindocument
%
foo ; directluatex.print(tex.textdir)
textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
You can at first expand the command withedeftmpadirectlua ...and then useifxtmpadirbut expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)
– Ulrike Fischer
Apr 2 at 12:42
The expansion should come just before the test like thisdeffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fiFor the LaTeX3 syntax I find it a bit difficult.
– Salim Bou
Apr 2 at 13:22
@SalimBou Just do the comparison in Lua.directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")
– Henri Menke
2 days ago
@HenriMenke I would like to createifconditional which test the text direction to change some tex dimensions not just to printTLTorTRTlike thisif<text direction is TLT> do this else do that fi
– Salim Bou
2 days ago
|
show 1 more comment
You need to expand the directlua before the test. E.g.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
cs_generate_variant:Nntl_if_eq:nnTF xn
deffootl_if_eq:xnTFdirectluatex.print(tex.textdir)TLTTLTTRT
ExplSyntaxOff
begindocument
%
foo ; directluatex.print(tex.textdir)
textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
You can at first expand the command withedeftmpadirectlua ...and then useifxtmpadirbut expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)
– Ulrike Fischer
Apr 2 at 12:42
The expansion should come just before the test like thisdeffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fiFor the LaTeX3 syntax I find it a bit difficult.
– Salim Bou
Apr 2 at 13:22
@SalimBou Just do the comparison in Lua.directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")
– Henri Menke
2 days ago
@HenriMenke I would like to createifconditional which test the text direction to change some tex dimensions not just to printTLTorTRTlike thisif<text direction is TLT> do this else do that fi
– Salim Bou
2 days ago
|
show 1 more comment
You need to expand the directlua before the test. E.g.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
cs_generate_variant:Nntl_if_eq:nnTF xn
deffootl_if_eq:xnTFdirectluatex.print(tex.textdir)TLTTLTTRT
ExplSyntaxOff
begindocument
%
foo ; directluatex.print(tex.textdir)
textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
You need to expand the directlua before the test. E.g.
documentclassarticle
usepackagefontspec
setmainfont[Script=Arabic]Amiri
ExplSyntaxOn
cs_generate_variant:Nntl_if_eq:nnTF xn
deffootl_if_eq:xnTFdirectluatex.print(tex.textdir)TLTTLTTRT
ExplSyntaxOff
begindocument
%
foo ; directluatex.print(tex.textdir)
textdir TRT
foo ; directluatex.print(tex.textdir)
enddocument
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
answered Apr 2 at 10:48
Ulrike FischerUlrike Fischer
198k9305692
198k9305692
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
You can at first expand the command withedeftmpadirectlua ...and then useifxtmpadirbut expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)
– Ulrike Fischer
Apr 2 at 12:42
The expansion should come just before the test like thisdeffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fiFor the LaTeX3 syntax I find it a bit difficult.
– Salim Bou
Apr 2 at 13:22
@SalimBou Just do the comparison in Lua.directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")
– Henri Menke
2 days ago
@HenriMenke I would like to createifconditional which test the text direction to change some tex dimensions not just to printTLTorTRTlike thisif<text direction is TLT> do this else do that fi
– Salim Bou
2 days ago
|
show 1 more comment
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
You can at first expand the command withedeftmpadirectlua ...and then useifxtmpadirbut expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)
– Ulrike Fischer
Apr 2 at 12:42
The expansion should come just before the test like thisdeffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fiFor the LaTeX3 syntax I find it a bit difficult.
– Salim Bou
Apr 2 at 13:22
@SalimBou Just do the comparison in Lua.directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")
– Henri Menke
2 days ago
@HenriMenke I would like to createifconditional which test the text direction to change some tex dimensions not just to printTLTorTRTlike thisif<text direction is TLT> do this else do that fi
– Salim Bou
2 days ago
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
Is there an equivalent macro without latex3?
– Salim Bou
Apr 2 at 10:55
You can at first expand the command with
edeftmpadirectlua ... and then use ifxtmpadir but expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)– Ulrike Fischer
Apr 2 at 12:42
You can at first expand the command with
edeftmpadirectlua ... and then use ifxtmpadir but expl3 solutions are imho better (and egreg's test is better than mine, comparing this as string is cleaner.)– Ulrike Fischer
Apr 2 at 12:42
The expansion should come just before the test like this
deffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fi For the LaTeX3 syntax I find it a bit difficult.– Salim Bou
Apr 2 at 13:22
The expansion should come just before the test like this
deffooedeftestdirdirectluatex.print(tex.textdir) ifxtestdirdir TLT else TRT fi For the LaTeX3 syntax I find it a bit difficult.– Salim Bou
Apr 2 at 13:22
@SalimBou Just do the comparison in Lua.
directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")– Henri Menke
2 days ago
@SalimBou Just do the comparison in Lua.
directluatex.print(tex.textdir == "TLT" and "TLT" or "TRT")– Henri Menke
2 days ago
@HenriMenke I would like to create
if conditional which test the text direction to change some tex dimensions not just to print TLT or TRT like this if<text direction is TLT> do this else do that fi– Salim Bou
2 days ago
@HenriMenke I would like to create
if conditional which test the text direction to change some tex dimensions not just to print TLT or TRT like this if<text direction is TLT> do this else do that fi– Salim Bou
2 days ago
|
show 1 more comment
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2
ifxdoes no expansion and only looks at the first level expansion when comparing two macros.– egreg
Apr 2 at 10:49