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How to understand which control sequence in undefined in “Undefined control sequence.” message?

1

I got "Undefined control sequence." message, but from ...sdir{directluatex.sprint(lfs.currentdir()) I do not understand, on which control sequence LuaLaTeX refers:

How can I explore it?

The MWE is

documentclass[a4paper, twoside]ltjsarticle

usepackageluatexja-fontspec

edefcurrfileabsdirdirectluatex.sprint(lfs.currentdir())/

begindocument
 done
enddocument 

luatex

share|improve this question

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Your file compiles without errors for me (TL 2018).
  
  – Alan Munn
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Is there a non-ascii character in your user name you wiped out?
  
  – Kurt
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @AlanMunn, Thank you for try. Did you compile by LuaLaTeX? It's interesting, what I missed. I'll upload a screencast later.
  
  – Gurebu Bokofu
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Kurt, no. Anyway, the cause is not here because I compile other LuaLaTeX project without errors on same PC.
  
  – Gurebu Bokofu
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Use tex.sprint(-2,lfs.currentdir()) to switch to verbatim catcodes.
  
  – Henri Menke
  4 hours ago
  

  
  
  
  

add a comment | 

1

I got "Undefined control sequence." message, but from ...sdir{directluatex.sprint(lfs.currentdir()) I do not understand, on which control sequence LuaLaTeX refers:

How can I explore it?

The MWE is

documentclass[a4paper, twoside]ltjsarticle

usepackageluatexja-fontspec

edefcurrfileabsdirdirectluatex.sprint(lfs.currentdir())/

begindocument
 done
enddocument 

luatex

share|improve this question

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Your file compiles without errors for me (TL 2018).
  
  – Alan Munn
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Is there a non-ascii character in your user name you wiped out?
  
  – Kurt
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @AlanMunn, Thank you for try. Did you compile by LuaLaTeX? It's interesting, what I missed. I'll upload a screencast later.
  
  – Gurebu Bokofu
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Kurt, no. Anyway, the cause is not here because I compile other LuaLaTeX project without errors on same PC.
  
  – Gurebu Bokofu
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Use tex.sprint(-2,lfs.currentdir()) to switch to verbatim catcodes.
  
  – Henri Menke
  4 hours ago
  

  
  
  
  

add a comment | 

I got "Undefined control sequence." message, but from ...sdir{directluatex.sprint(lfs.currentdir()) I do not understand, on which control sequence LuaLaTeX refers:

How can I explore it?

The MWE is

documentclass[a4paper, twoside]ltjsarticle

usepackageluatexja-fontspec

edefcurrfileabsdirdirectluatex.sprint(lfs.currentdir())/

begindocument
 done
enddocument 

luatex

share|improve this question

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

documentclass[a4paper, twoside]ltjsarticle

usepackageluatexja-fontspec

edefcurrfileabsdirdirectluatex.sprint(lfs.currentdir())/

begindocument
 done
enddocument 

share|improve this question

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

share|improve this question

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

asked 6 hours ago

Gurebu BokofuGurebu Bokofu

3151316

2 Answers
2

active

oldest

votes

3

The undefined control sequence is Users which is part of the path. Even though here is meant to be the path separator, LuaTeX doesn't know that and just feeds the path with the currently active catcodes back to TeX, where happens to be the escape characters. Luckily, you can tell tex.sprint to use a different catcode table using an optional argument. To use verbatim catcodes (everything is catcode 12, except space which retains catcode 10) use the catcode table with number -2.

edefcurrfileabsdirdirectluatex.sprint(-2, lfs.currentdir())/

share|improve this answer

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  That why I did not understand... You have the deep understanding. Thank you for the answer!
  
  – Gurebu Bokofu
  3 hours ago
  

  
  
  
  

add a comment | 

2

The undefined control sequence is the thing just before the line break:

documentclassarticle
begindocument
quadacommandthatdoesntexistquad
enddocument

Has the output:

! Undefined control sequence.
<*> quadacommandthatdoesntexist
 quad

In your case, that appears to be Users, which may suggest that TeX is trying to read a Windows path and interpreting the as beginning a command. You'll probably need a package that can navigate Windows directories.

share|improve this answer

answered 4 hours ago

TeepeemmTeepeemm

1,738717

add a comment | 

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3

The undefined control sequence is Users which is part of the path. Even though here is meant to be the path separator, LuaTeX doesn't know that and just feeds the path with the currently active catcodes back to TeX, where happens to be the escape characters. Luckily, you can tell tex.sprint to use a different catcode table using an optional argument. To use verbatim catcodes (everything is catcode 12, except space which retains catcode 10) use the catcode table with number -2.

edefcurrfileabsdirdirectluatex.sprint(-2, lfs.currentdir())/

share|improve this answer

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  That why I did not understand... You have the deep understanding. Thank you for the answer!
  
  – Gurebu Bokofu
  3 hours ago
  

  
  
  
  

add a comment | 

3

The undefined control sequence is Users which is part of the path. Even though here is meant to be the path separator, LuaTeX doesn't know that and just feeds the path with the currently active catcodes back to TeX, where happens to be the escape characters. Luckily, you can tell tex.sprint to use a different catcode table using an optional argument. To use verbatim catcodes (everything is catcode 12, except space which retains catcode 10) use the catcode table with number -2.

edefcurrfileabsdirdirectluatex.sprint(-2, lfs.currentdir())/

share|improve this answer

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  That why I did not understand... You have the deep understanding. Thank you for the answer!
  
  – Gurebu Bokofu
  3 hours ago
  

  
  
  
  

add a comment | 

The undefined control sequence is Users which is part of the path. Even though here is meant to be the path separator, LuaTeX doesn't know that and just feeds the path with the currently active catcodes back to TeX, where happens to be the escape characters. Luckily, you can tell tex.sprint to use a different catcode table using an optional argument. To use verbatim catcodes (everything is catcode 12, except space which retains catcode 10) use the catcode table with number -2.

edefcurrfileabsdirdirectluatex.sprint(-2, lfs.currentdir())/

share|improve this answer

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

edefcurrfileabsdirdirectluatex.sprint(-2, lfs.currentdir())/

share|improve this answer

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

answered 4 hours ago

Henri MenkeHenri Menke

77.2k8170284

2

The undefined control sequence is the thing just before the line break:

documentclassarticle
begindocument
quadacommandthatdoesntexistquad
enddocument

Has the output:

! Undefined control sequence.
<*> quadacommandthatdoesntexist
 quad

In your case, that appears to be Users, which may suggest that TeX is trying to read a Windows path and interpreting the as beginning a command. You'll probably need a package that can navigate Windows directories.

share|improve this answer

answered 4 hours ago

TeepeemmTeepeemm

1,738717

add a comment | 

2

The undefined control sequence is the thing just before the line break:

documentclassarticle
begindocument
quadacommandthatdoesntexistquad
enddocument

Has the output:

! Undefined control sequence.
<*> quadacommandthatdoesntexist
 quad

In your case, that appears to be Users, which may suggest that TeX is trying to read a Windows path and interpreting the as beginning a command. You'll probably need a package that can navigate Windows directories.

share|improve this answer

answered 4 hours ago

TeepeemmTeepeemm

1,738717

add a comment | 

The undefined control sequence is the thing just before the line break:

documentclassarticle
begindocument
quadacommandthatdoesntexistquad
enddocument

Has the output:

! Undefined control sequence.
<*> quadacommandthatdoesntexist
 quad

In your case, that appears to be Users, which may suggest that TeX is trying to read a Windows path and interpreting the as beginning a command. You'll probably need a package that can navigate Windows directories.

share|improve this answer

answered 4 hours ago

TeepeemmTeepeemm

1,738717

documentclassarticle
begindocument
quadacommandthatdoesntexistquad
enddocument

! Undefined control sequence.
<*> quadacommandthatdoesntexist
 quad

share|improve this answer

answered 4 hours ago

TeepeemmTeepeemm

1,738717

answered 4 hours ago

TeepeemmTeepeemm

1,738717

answered 4 hours ago

TeepeemmTeepeemm

1,738717