Problem with nested if statements

Clash Royale CLAN TAG#URR8PPP

up vote
2
down vote

favorite

I'm trying to use some nested if statements to decide if a file exists and what kind of loadings are possible:

IfFileExists./emoji.sty
 ifxetex
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 usepackageifluatex
 ifluatex
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/#3.png
 emoji#3
 
 #1
 
 

 renewcommanddoxygenemoji[3] #1 

but unfortunately I get the error message:

! Extra else.
IfFileExists ...ileonpath #1#2#3}fi else
 closein @inputcheck ede...
l.60 }

where line 60 is the last closing bracket (}).

(Not yet a real MWE but hopefully I can get some hints already).

conditionals nesting ifthenelse

share|improve this question

edited 1 hour ago

Phelype Oleinik

17.3k43770

asked 2 hours ago

albert

450314

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  Load ifluatex before starting IfFileExists; otherwise ifluatex is not a conditional unless you are using luatex and therefore a missing conditional error ensues.
  – egreg
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg, but one still needs the double ##, correct?
  – albert
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  Yes, I was explaining the “apparently doesn't like the ifluatex conditional“ in Phelype's answer. By the way, you have several spurious spaces in your code.
  – egreg
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  the ones with the renewcommand (should be newcommand) around the #1 are known. Which others?
  – albert
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg Ooh, that explains the problem with the conditional. Same problem as in my question about docstrip a few weeks ago. I'm a slow learner :P
  – Phelype Oleinik
  1 hour ago
  

  
  
  
  

add a comment | 

up vote
2
down vote

favorite

I'm trying to use some nested if statements to decide if a file exists and what kind of loadings are possible:

IfFileExists./emoji.sty
 ifxetex
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 usepackageifluatex
 ifluatex
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/#3.png
 emoji#3
 
 #1
 
 

 renewcommanddoxygenemoji[3] #1 

but unfortunately I get the error message:

! Extra else.
IfFileExists ...ileonpath #1#2#3}fi else
 closein @inputcheck ede...
l.60 }

where line 60 is the last closing bracket (}).

(Not yet a real MWE but hopefully I can get some hints already).

conditionals nesting ifthenelse

share|improve this question

edited 1 hour ago

Phelype Oleinik

17.3k43770

asked 2 hours ago

albert

450314

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  Load ifluatex before starting IfFileExists; otherwise ifluatex is not a conditional unless you are using luatex and therefore a missing conditional error ensues.
  – egreg
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg, but one still needs the double ##, correct?
  – albert
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  Yes, I was explaining the “apparently doesn't like the ifluatex conditional“ in Phelype's answer. By the way, you have several spurious spaces in your code.
  – egreg
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  the ones with the renewcommand (should be newcommand) around the #1 are known. Which others?
  – albert
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg Ooh, that explains the problem with the conditional. Same problem as in my question about docstrip a few weeks ago. I'm a slow learner :P
  – Phelype Oleinik
  1 hour ago
  

  
  
  
  

add a comment | 

up vote
2
down vote

favorite

up vote
2
down vote

favorite

I'm trying to use some nested if statements to decide if a file exists and what kind of loadings are possible:

IfFileExists./emoji.sty
 ifxetex
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 usepackageifluatex
 ifluatex
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/#3.png
 emoji#3
 
 #1
 
 

 renewcommanddoxygenemoji[3] #1 

but unfortunately I get the error message:

! Extra else.
IfFileExists ...ileonpath #1#2#3}fi else
 closein @inputcheck ede...
l.60 }

where line 60 is the last closing bracket (}).

(Not yet a real MWE but hopefully I can get some hints already).

conditionals nesting ifthenelse

share|improve this question

edited 1 hour ago

Phelype Oleinik

17.3k43770

asked 2 hours ago

albert

450314

I'm trying to use some nested if statements to decide if a file exists and what kind of loadings are possible:

IfFileExists./emoji.sty
 ifxetex
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 usepackageifluatex
 ifluatex
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/#3.png
 emoji#3
 
 #1
 
 

 renewcommanddoxygenemoji[3] #1 

but unfortunately I get the error message:

! Extra else.
IfFileExists ...ileonpath #1#2#3}fi else
 closein @inputcheck ede...
l.60 }

where line 60 is the last closing bracket (}).

(Not yet a real MWE but hopefully I can get some hints already).

conditionals nesting ifthenelse

conditionals nesting ifthenelse

share|improve this question

edited 1 hour ago

Phelype Oleinik

17.3k43770

asked 2 hours ago

albert

450314

share|improve this question

edited 1 hour ago

Phelype Oleinik

17.3k43770

asked 2 hours ago

albert

450314

share|improve this question

share|improve this question

edited 1 hour ago

Phelype Oleinik

17.3k43770

edited 1 hour ago

Phelype Oleinik

17.3k43770

edited 1 hour ago

Phelype Oleinik

17.3k43770

17.3k43770

asked 2 hours ago

albert

450314

asked 2 hours ago

albert

450314

asked 2 hours ago

albert

450314

450314

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  Load ifluatex before starting IfFileExists; otherwise ifluatex is not a conditional unless you are using luatex and therefore a missing conditional error ensues.
  – egreg
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg, but one still needs the double ##, correct?
  – albert
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  Yes, I was explaining the “apparently doesn't like the ifluatex conditional“ in Phelype's answer. By the way, you have several spurious spaces in your code.
  – egreg
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  the ones with the renewcommand (should be newcommand) around the #1 are known. Which others?
  – albert
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg Ooh, that explains the problem with the conditional. Same problem as in my question about docstrip a few weeks ago. I'm a slow learner :P
  – Phelype Oleinik
  1 hour ago
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  Load ifluatex before starting IfFileExists; otherwise ifluatex is not a conditional unless you are using luatex and therefore a missing conditional error ensues.
  – egreg
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg, but one still needs the double ##, correct?
  – albert
  1 hour ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  Yes, I was explaining the “apparently doesn't like the ifluatex conditional“ in Phelype's answer. By the way, you have several spurious spaces in your code.
  – egreg
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  the ones with the renewcommand (should be newcommand) around the #1 are known. Which others?
  – albert
  1 hour ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  @egreg Ooh, that explains the problem with the conditional. Same problem as in my question about docstrip a few weeks ago. I'm a slow learner :P
  – Phelype Oleinik
  1 hour ago
  

  
  
  
  

1

1

Load ifluatex before starting IfFileExists; otherwise ifluatex is not a conditional unless you are using luatex and therefore a missing conditional error ensues.
– egreg
1 hour ago

Load ifluatex before starting IfFileExists; otherwise ifluatex is not a conditional unless you are using luatex and therefore a missing conditional error ensues.
– egreg
1 hour ago

@egreg, but one still needs the double ##, correct?
– albert
1 hour ago

@egreg, but one still needs the double ##, correct?
– albert
1 hour ago

Yes, I was explaining the “apparently doesn't like the ifluatex conditional“ in Phelype's answer. By the way, you have several spurious spaces in your code.
– egreg
1 hour ago

Yes, I was explaining the “apparently doesn't like the ifluatex conditional“ in Phelype's answer. By the way, you have several spurious spaces in your code.
– egreg
1 hour ago

the ones with the renewcommand (should be newcommand) around the #1 are known. Which others?
– albert
1 hour ago

the ones with the renewcommand (should be newcommand) around the #1 are known. Which others?
– albert
1 hour ago

@egreg Ooh, that explains the problem with the conditional. Same problem as in my question about docstrip a few weeks ago. I'm a slow learner :P
– Phelype Oleinik
1 hour ago

@egreg Ooh, that explains the problem with the conditional. Same problem as in my question about docstrip a few weeks ago. I'm a slow learner :P
– Phelype Oleinik
1 hour ago

add a comment | 

2 Answers
2

active

oldest

votes

up vote
3
down vote



accepted

You need to double the parameter characters because IfFileExists grabs the true and false branch as arguments. Also, it apparently doesn't like the ifluatex conditional. You can use iftex's conditionals:

usepackageiftex
IfFileExists./emoji.sty
 ifXeTeX
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 ifLuaTeX
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/##3.png
 emoji##3
 
 ##1
 
 

 newcommanddoxygenemoji[3] ##1 

Or, to avoid doubling the parameter characters and for an extra degree of robustness you can use expl3's conditionals:

usepackageexpl3
ExplSyntaxOn
file_if_exist:nTF ./emoji.sty 
 
 sys_if_engine_xetex:T
 
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_luatex:T
 
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_pdftex:T
 
 usepackage[bw]emoji
 
 cs_new:Npn doxygenemoji #1 #2 #3
 
 file_if_exist:nTF bw/#3.png 
 
 emoji #3 
 
 #1
 
 
 
 
 cs_new:Npn doxygenemoji #1 #2 #3
 ##1 
 
ExplSyntaxOff

share|improve this answer

answered 1 hour ago

Phelype Oleinik

17.3k43770

add a comment | 

up vote
2
down vote

There are two errors in your code. The first is loading ifluatex inside a conditional; if the code is skipped (because the engine is XeLaTeX), ifluatex will not yet be a conditional, but an undefined token, resulting in an unbalanced conditional.

The second error is not doubling # in the definition.

I'd reorganize the code in a different fashion, avoiding complicated code in the true and false branches of IfFileExists.

usepackageifluatex,ifxetex

newififemoji
IfFileExists./emoji.styemojitrueemojifalse

ifemoji
 ifxetex
 usepackagefontspec
 PassOptionsToPackagefont=seguiemj.ttfemoji
 fi
 ifluatex
 usepackagefontspec
 PassOptionsToPackagefont=Symbola_hint.ttfemoji
 fi 
 usepackage[bw]emoji
 newcommanddoxygenemoji[3]%
 IfFileExistsbw/#3.png%
 emoji#3%
 %
 #1%
 %
 
else
 newcommanddoxygenemoji[3]#1
fi 

share|improve this answer

answered 1 hour ago

egreg

685k8418273077

add a comment | 

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

active

oldest

votes

active

oldest

votes

up vote
3
down vote



accepted

You need to double the parameter characters because IfFileExists grabs the true and false branch as arguments. Also, it apparently doesn't like the ifluatex conditional. You can use iftex's conditionals:

usepackageiftex
IfFileExists./emoji.sty
 ifXeTeX
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 ifLuaTeX
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/##3.png
 emoji##3
 
 ##1
 
 

 newcommanddoxygenemoji[3] ##1 

Or, to avoid doubling the parameter characters and for an extra degree of robustness you can use expl3's conditionals:

usepackageexpl3
ExplSyntaxOn
file_if_exist:nTF ./emoji.sty 
 
 sys_if_engine_xetex:T
 
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_luatex:T
 
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_pdftex:T
 
 usepackage[bw]emoji
 
 cs_new:Npn doxygenemoji #1 #2 #3
 
 file_if_exist:nTF bw/#3.png 
 
 emoji #3 
 
 #1
 
 
 
 
 cs_new:Npn doxygenemoji #1 #2 #3
 ##1 
 
ExplSyntaxOff

share|improve this answer

answered 1 hour ago

Phelype Oleinik

17.3k43770

add a comment | 

up vote
3
down vote



accepted

You need to double the parameter characters because IfFileExists grabs the true and false branch as arguments. Also, it apparently doesn't like the ifluatex conditional. You can use iftex's conditionals:

usepackageiftex
IfFileExists./emoji.sty
 ifXeTeX
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 ifLuaTeX
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/##3.png
 emoji##3
 
 ##1
 
 

 newcommanddoxygenemoji[3] ##1 

Or, to avoid doubling the parameter characters and for an extra degree of robustness you can use expl3's conditionals:

usepackageexpl3
ExplSyntaxOn
file_if_exist:nTF ./emoji.sty 
 
 sys_if_engine_xetex:T
 
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_luatex:T
 
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_pdftex:T
 
 usepackage[bw]emoji
 
 cs_new:Npn doxygenemoji #1 #2 #3
 
 file_if_exist:nTF bw/#3.png 
 
 emoji #3 
 
 #1
 
 
 
 
 cs_new:Npn doxygenemoji #1 #2 #3
 ##1 
 
ExplSyntaxOff

share|improve this answer

answered 1 hour ago

Phelype Oleinik

17.3k43770

add a comment | 

up vote
3
down vote



accepted

up vote
3
down vote



accepted

You need to double the parameter characters because IfFileExists grabs the true and false branch as arguments. Also, it apparently doesn't like the ifluatex conditional. You can use iftex's conditionals:

usepackageiftex
IfFileExists./emoji.sty
 ifXeTeX
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 ifLuaTeX
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/##3.png
 emoji##3
 
 ##1
 
 

 newcommanddoxygenemoji[3] ##1 

Or, to avoid doubling the parameter characters and for an extra degree of robustness you can use expl3's conditionals:

usepackageexpl3
ExplSyntaxOn
file_if_exist:nTF ./emoji.sty 
 
 sys_if_engine_xetex:T
 
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_luatex:T
 
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_pdftex:T
 
 usepackage[bw]emoji
 
 cs_new:Npn doxygenemoji #1 #2 #3
 
 file_if_exist:nTF bw/#3.png 
 
 emoji #3 
 
 #1
 
 
 
 
 cs_new:Npn doxygenemoji #1 #2 #3
 ##1 
 
ExplSyntaxOff

share|improve this answer

answered 1 hour ago

Phelype Oleinik

17.3k43770

You need to double the parameter characters because IfFileExists grabs the true and false branch as arguments. Also, it apparently doesn't like the ifluatex conditional. You can use iftex's conditionals:

usepackageiftex
IfFileExists./emoji.sty
 ifXeTeX
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 else
 ifLuaTeX
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 else
 usepackage[bw]emoji
 fi
 fi
 newcommanddoxygenemoji[3]
 IfFileExistsbw/##3.png
 emoji##3
 
 ##1
 
 

 newcommanddoxygenemoji[3] ##1 

Or, to avoid doubling the parameter characters and for an extra degree of robustness you can use expl3's conditionals:

usepackageexpl3
ExplSyntaxOn
file_if_exist:nTF ./emoji.sty 
 
 sys_if_engine_xetex:T
 
 usepackage[bw,font=seguiemj.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_luatex:T
 
 usepackage[bw,font=Symbola_hint.ttf]emoji
 usepackagefontspec
 
 sys_if_engine_pdftex:T
 
 usepackage[bw]emoji
 
 cs_new:Npn doxygenemoji #1 #2 #3
 
 file_if_exist:nTF bw/#3.png 
 
 emoji #3 
 
 #1
 
 
 
 
 cs_new:Npn doxygenemoji #1 #2 #3
 ##1 
 
ExplSyntaxOff

share|improve this answer

answered 1 hour ago

Phelype Oleinik

17.3k43770

share|improve this answer

share|improve this answer

answered 1 hour ago

Phelype Oleinik

17.3k43770

answered 1 hour ago

Phelype Oleinik

17.3k43770

answered 1 hour ago

Phelype Oleinik

17.3k43770

17.3k43770

add a comment | 

add a comment | 

up vote
2
down vote

There are two errors in your code. The first is loading ifluatex inside a conditional; if the code is skipped (because the engine is XeLaTeX), ifluatex will not yet be a conditional, but an undefined token, resulting in an unbalanced conditional.

The second error is not doubling # in the definition.

I'd reorganize the code in a different fashion, avoiding complicated code in the true and false branches of IfFileExists.

usepackageifluatex,ifxetex

newififemoji
IfFileExists./emoji.styemojitrueemojifalse

ifemoji
 ifxetex
 usepackagefontspec
 PassOptionsToPackagefont=seguiemj.ttfemoji
 fi
 ifluatex
 usepackagefontspec
 PassOptionsToPackagefont=Symbola_hint.ttfemoji
 fi 
 usepackage[bw]emoji
 newcommanddoxygenemoji[3]%
 IfFileExistsbw/#3.png%
 emoji#3%
 %
 #1%
 %
 
else
 newcommanddoxygenemoji[3]#1
fi 

share|improve this answer

answered 1 hour ago

egreg

685k8418273077

add a comment | 

up vote
2
down vote

There are two errors in your code. The first is loading ifluatex inside a conditional; if the code is skipped (because the engine is XeLaTeX), ifluatex will not yet be a conditional, but an undefined token, resulting in an unbalanced conditional.

The second error is not doubling # in the definition.

I'd reorganize the code in a different fashion, avoiding complicated code in the true and false branches of IfFileExists.

usepackageifluatex,ifxetex

newififemoji
IfFileExists./emoji.styemojitrueemojifalse

ifemoji
 ifxetex
 usepackagefontspec
 PassOptionsToPackagefont=seguiemj.ttfemoji
 fi
 ifluatex
 usepackagefontspec
 PassOptionsToPackagefont=Symbola_hint.ttfemoji
 fi 
 usepackage[bw]emoji
 newcommanddoxygenemoji[3]%
 IfFileExistsbw/#3.png%
 emoji#3%
 %
 #1%
 %
 
else
 newcommanddoxygenemoji[3]#1
fi 

share|improve this answer

answered 1 hour ago

egreg

685k8418273077

add a comment | 

up vote
2
down vote

up vote
2
down vote

There are two errors in your code. The first is loading ifluatex inside a conditional; if the code is skipped (because the engine is XeLaTeX), ifluatex will not yet be a conditional, but an undefined token, resulting in an unbalanced conditional.

The second error is not doubling # in the definition.

I'd reorganize the code in a different fashion, avoiding complicated code in the true and false branches of IfFileExists.

usepackageifluatex,ifxetex

newififemoji
IfFileExists./emoji.styemojitrueemojifalse

ifemoji
 ifxetex
 usepackagefontspec
 PassOptionsToPackagefont=seguiemj.ttfemoji
 fi
 ifluatex
 usepackagefontspec
 PassOptionsToPackagefont=Symbola_hint.ttfemoji
 fi 
 usepackage[bw]emoji
 newcommanddoxygenemoji[3]%
 IfFileExistsbw/#3.png%
 emoji#3%
 %
 #1%
 %
 
else
 newcommanddoxygenemoji[3]#1
fi 

share|improve this answer

answered 1 hour ago

egreg

685k8418273077

There are two errors in your code. The first is loading ifluatex inside a conditional; if the code is skipped (because the engine is XeLaTeX), ifluatex will not yet be a conditional, but an undefined token, resulting in an unbalanced conditional.

The second error is not doubling # in the definition.

I'd reorganize the code in a different fashion, avoiding complicated code in the true and false branches of IfFileExists.

usepackageifluatex,ifxetex

newififemoji
IfFileExists./emoji.styemojitrueemojifalse

ifemoji
 ifxetex
 usepackagefontspec
 PassOptionsToPackagefont=seguiemj.ttfemoji
 fi
 ifluatex
 usepackagefontspec
 PassOptionsToPackagefont=Symbola_hint.ttfemoji
 fi 
 usepackage[bw]emoji
 newcommanddoxygenemoji[3]%
 IfFileExistsbw/#3.png%
 emoji#3%
 %
 #1%
 %
 
else
 newcommanddoxygenemoji[3]#1
fi 

share|improve this answer

answered 1 hour ago

egreg

685k8418273077

share|improve this answer

share|improve this answer

answered 1 hour ago

egreg

685k8418273077

answered 1 hour ago

egreg

685k8418273077

answered 1 hour ago

egreg

685k8418273077

685k8418273077

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