Remove backslash from string

Clash Royale CLAN TAG#URR8PPP

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I am defining a new command, where the input contains backslash, which is to be removed later, hence I am searching for a way to accomplish that. The following example removes backslash when it is in-front of the string, but fails when the slash is in-between a string.

documentclassarticle
makeatletter
newcommandremoveabs[1]%
 ifcatrelaxnoexpand#1%
 expandafterexpandafterexpandafter@gobbleexpandafterstring
 fi
 #1%

makeatother
begindocument
removeabsthe slash is removed here
removeabsbut not here
enddocument

Does anybody know how to remove the backslash, even if it is in-between a string ?

macros

share|improve this question

edited 1 hour ago

asked 1 hour ago

Ashok

310111

add a comment | 

up vote
2
down vote

favorite

1

I am defining a new command, where the input contains backslash, which is to be removed later, hence I am searching for a way to accomplish that. The following example removes backslash when it is in-front of the string, but fails when the slash is in-between a string.

documentclassarticle
makeatletter
newcommandremoveabs[1]%
 ifcatrelaxnoexpand#1%
 expandafterexpandafterexpandafter@gobbleexpandafterstring
 fi
 #1%

makeatother
begindocument
removeabsthe slash is removed here
removeabsbut not here
enddocument

Does anybody know how to remove the backslash, even if it is in-between a string ?

macros

share|improve this question

edited 1 hour ago

asked 1 hour ago

Ashok

310111

add a comment | 

up vote
2
down vote

favorite

1

up vote
2
down vote

favorite

1

1

I am defining a new command, where the input contains backslash, which is to be removed later, hence I am searching for a way to accomplish that. The following example removes backslash when it is in-front of the string, but fails when the slash is in-between a string.

documentclassarticle
makeatletter
newcommandremoveabs[1]%
 ifcatrelaxnoexpand#1%
 expandafterexpandafterexpandafter@gobbleexpandafterstring
 fi
 #1%

makeatother
begindocument
removeabsthe slash is removed here
removeabsbut not here
enddocument

Does anybody know how to remove the backslash, even if it is in-between a string ?

macros

share|improve this question

edited 1 hour ago

asked 1 hour ago

Ashok

310111

I am defining a new command, where the input contains backslash, which is to be removed later, hence I am searching for a way to accomplish that. The following example removes backslash when it is in-front of the string, but fails when the slash is in-between a string.

documentclassarticle
makeatletter
newcommandremoveabs[1]%
 ifcatrelaxnoexpand#1%
 expandafterexpandafterexpandafter@gobbleexpandafterstring
 fi
 #1%

makeatother
begindocument
removeabsthe slash is removed here
removeabsbut not here
enddocument

Does anybody know how to remove the backslash, even if it is in-between a string ?

macros

macros

share|improve this question

edited 1 hour ago

asked 1 hour ago

Ashok

310111

share|improve this question

edited 1 hour ago

asked 1 hour ago

Ashok

310111

share|improve this question

share|improve this question

edited 1 hour ago

edited 1 hour ago

edited 1 hour ago

asked 1 hour ago

Ashok

310111

asked 1 hour ago

Ashok

310111

asked 1 hour ago

Ashok

310111

310111

add a comment | 

add a comment | 

2 Answers
2

active

oldest

votes

up vote
4
down vote



accepted

documentclassarticle
newcommandremoveabs[1]%
 %catcode92=9 endlinechar-1 scantokensexpandafterdetokenize#1%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash is removed here
removeabsand also here+++
enddocument

But your use case is not really known...

As pointed out by @A.Ellett there is no real need for detokenize. Even, maybe you want to preserve things like math:

documentclassarticle
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash $E=mc^2$ is removed here
removeabsand also here+++
enddocument

Perhaps you want to store in macro, the following shows how to do it (but the x here is used and discarded).

Notice though that therein you should not be some active character with a definition not compatible with an edef. The ~ and the UTF-8 things are OK.

documentclassarticle
usepackage[T1]fontenc
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 everyeofnoexpandedefxscantokens#1x%

begindocument
removeabsthe slash $E=mc^2$ is~~~~removed here
removeabsand also éééé here+++
enddocument

Thanks to @A.Ellett!

share|improve this answer

edited 36 mins ago

answered 1 hour ago

jfbu

42.8k64139

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  Is detokenize really necessary there? Won't scantokens alone handle everything?
  – A.Ellett
  52 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  @A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
  – jfbu
  43 mins ago
  

  
  
  
  

add a comment | 

up vote
0
down vote

With expl3:

documentclassarticle
usepackagexparse

ExplSyntaxOn

NewDocumentCommandremovebsm
 
 tl_set:Nn l_tmpa_tl #1 
 regex_replace_all:nnN cC. ccs_to_str:N l_tmpa_tl
 tl_use:N l_tmpa_tl
 

ExplSyntaxOff

begindocument

removebsthe slash is removed here

removebsthe slashes are removed here

removebsand also here

enddocument

Note that the space after the in the first case doesn't disappear, because it was ignored to begin with.

share|improve this answer

answered 13 mins ago

egreg

688k8518323080

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
4
down vote



accepted

documentclassarticle
newcommandremoveabs[1]%
 %catcode92=9 endlinechar-1 scantokensexpandafterdetokenize#1%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash is removed here
removeabsand also here+++
enddocument

But your use case is not really known...

As pointed out by @A.Ellett there is no real need for detokenize. Even, maybe you want to preserve things like math:

documentclassarticle
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash $E=mc^2$ is removed here
removeabsand also here+++
enddocument

Perhaps you want to store in macro, the following shows how to do it (but the x here is used and discarded).

Notice though that therein you should not be some active character with a definition not compatible with an edef. The ~ and the UTF-8 things are OK.

documentclassarticle
usepackage[T1]fontenc
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 everyeofnoexpandedefxscantokens#1x%

begindocument
removeabsthe slash $E=mc^2$ is~~~~removed here
removeabsand also éééé here+++
enddocument

Thanks to @A.Ellett!

share|improve this answer

edited 36 mins ago

answered 1 hour ago

jfbu

42.8k64139

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  Is detokenize really necessary there? Won't scantokens alone handle everything?
  – A.Ellett
  52 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  @A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
  – jfbu
  43 mins ago
  

  
  
  
  

add a comment | 

up vote
4
down vote



accepted

documentclassarticle
newcommandremoveabs[1]%
 %catcode92=9 endlinechar-1 scantokensexpandafterdetokenize#1%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash is removed here
removeabsand also here+++
enddocument

But your use case is not really known...

As pointed out by @A.Ellett there is no real need for detokenize. Even, maybe you want to preserve things like math:

documentclassarticle
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash $E=mc^2$ is removed here
removeabsand also here+++
enddocument

Perhaps you want to store in macro, the following shows how to do it (but the x here is used and discarded).

Notice though that therein you should not be some active character with a definition not compatible with an edef. The ~ and the UTF-8 things are OK.

documentclassarticle
usepackage[T1]fontenc
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 everyeofnoexpandedefxscantokens#1x%

begindocument
removeabsthe slash $E=mc^2$ is~~~~removed here
removeabsand also éééé here+++
enddocument

Thanks to @A.Ellett!

share|improve this answer

edited 36 mins ago

answered 1 hour ago

jfbu

42.8k64139

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  Is detokenize really necessary there? Won't scantokens alone handle everything?
  – A.Ellett
  52 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  @A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
  – jfbu
  43 mins ago
  

  
  
  
  

add a comment | 

up vote
4
down vote



accepted

up vote
4
down vote



accepted

documentclassarticle
newcommandremoveabs[1]%
 %catcode92=9 endlinechar-1 scantokensexpandafterdetokenize#1%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash is removed here
removeabsand also here+++
enddocument

But your use case is not really known...

As pointed out by @A.Ellett there is no real need for detokenize. Even, maybe you want to preserve things like math:

documentclassarticle
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash $E=mc^2$ is removed here
removeabsand also here+++
enddocument

Perhaps you want to store in macro, the following shows how to do it (but the x here is used and discarded).

Notice though that therein you should not be some active character with a definition not compatible with an edef. The ~ and the UTF-8 things are OK.

documentclassarticle
usepackage[T1]fontenc
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 everyeofnoexpandedefxscantokens#1x%

begindocument
removeabsthe slash $E=mc^2$ is~~~~removed here
removeabsand also éééé here+++
enddocument

Thanks to @A.Ellett!

share|improve this answer

edited 36 mins ago

answered 1 hour ago

jfbu

42.8k64139

documentclassarticle
newcommandremoveabs[1]%
 %catcode92=9 endlinechar-1 scantokensexpandafterdetokenize#1%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash is removed here
removeabsand also here+++
enddocument

But your use case is not really known...

As pointed out by @A.Ellett there is no real need for detokenize. Even, maybe you want to preserve things like math:

documentclassarticle
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 scantokens#1%

begindocument
removeabsthe slash $E=mc^2$ is removed here
removeabsand also here+++
enddocument

Perhaps you want to store in macro, the following shows how to do it (but the x here is used and discarded).

Notice though that therein you should not be some active character with a definition not compatible with an edef. The ~ and the UTF-8 things are OK.

documentclassarticle
usepackage[T1]fontenc
newcommandremoveabs[1]%
 catcode92=9 endlinechar-1 everyeofnoexpandedefxscantokens#1x%

begindocument
removeabsthe slash $E=mc^2$ is~~~~removed here
removeabsand also éééé here+++
enddocument

Thanks to @A.Ellett!

share|improve this answer

edited 36 mins ago

answered 1 hour ago

jfbu

42.8k64139

share|improve this answer

share|improve this answer

edited 36 mins ago

edited 36 mins ago

edited 36 mins ago

answered 1 hour ago

jfbu

42.8k64139

answered 1 hour ago

jfbu

42.8k64139

answered 1 hour ago

jfbu

42.8k64139

42.8k64139

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  Is detokenize really necessary there? Won't scantokens alone handle everything?
  – A.Ellett
  52 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  @A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
  – jfbu
  43 mins ago
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  Is detokenize really necessary there? Won't scantokens alone handle everything?
  – A.Ellett
  52 mins ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  @A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
  – jfbu
  43 mins ago
  

  
  
  
  

2

2

Is detokenize really necessary there? Won't scantokens alone handle everything?
– A.Ellett
52 mins ago

Is detokenize really necessary there? Won't scantokens alone handle everything?
– A.Ellett
52 mins ago

1

1

@A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
– jfbu
43 mins ago

@A.Ellett you are absolutely right, but the OP was mentioning "strings"... I will edit.
– jfbu
43 mins ago

add a comment | 

up vote
0
down vote

With expl3:

documentclassarticle
usepackagexparse

ExplSyntaxOn

NewDocumentCommandremovebsm
 
 tl_set:Nn l_tmpa_tl #1 
 regex_replace_all:nnN cC. ccs_to_str:N l_tmpa_tl
 tl_use:N l_tmpa_tl
 

ExplSyntaxOff

begindocument

removebsthe slash is removed here

removebsthe slashes are removed here

removebsand also here

enddocument

Note that the space after the in the first case doesn't disappear, because it was ignored to begin with.

share|improve this answer

answered 13 mins ago

egreg

688k8518323080

add a comment | 

up vote
0
down vote

With expl3:

documentclassarticle
usepackagexparse

ExplSyntaxOn

NewDocumentCommandremovebsm
 
 tl_set:Nn l_tmpa_tl #1 
 regex_replace_all:nnN cC. ccs_to_str:N l_tmpa_tl
 tl_use:N l_tmpa_tl
 

ExplSyntaxOff

begindocument

removebsthe slash is removed here

removebsthe slashes are removed here

removebsand also here

enddocument

Note that the space after the in the first case doesn't disappear, because it was ignored to begin with.

share|improve this answer

answered 13 mins ago

egreg

688k8518323080

add a comment | 

up vote
0
down vote

up vote
0
down vote

With expl3:

documentclassarticle
usepackagexparse

ExplSyntaxOn

NewDocumentCommandremovebsm
 
 tl_set:Nn l_tmpa_tl #1 
 regex_replace_all:nnN cC. ccs_to_str:N l_tmpa_tl
 tl_use:N l_tmpa_tl
 

ExplSyntaxOff

begindocument

removebsthe slash is removed here

removebsthe slashes are removed here

removebsand also here

enddocument

Note that the space after the in the first case doesn't disappear, because it was ignored to begin with.

share|improve this answer

answered 13 mins ago

egreg

688k8518323080

With expl3:

documentclassarticle
usepackagexparse

ExplSyntaxOn

NewDocumentCommandremovebsm
 
 tl_set:Nn l_tmpa_tl #1 
 regex_replace_all:nnN cC. ccs_to_str:N l_tmpa_tl
 tl_use:N l_tmpa_tl
 

ExplSyntaxOff

begindocument

removebsthe slash is removed here

removebsthe slashes are removed here

removebsand also here

enddocument

Note that the space after the in the first case doesn't disappear, because it was ignored to begin with.

share|improve this answer

answered 13 mins ago

egreg

688k8518323080

share|improve this answer

share|improve this answer

answered 13 mins ago

egreg

688k8518323080

answered 13 mins ago

egreg

688k8518323080

answered 13 mins ago

egreg

688k8518323080

688k8518323080

add a comment | 

add a comment | 

 

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