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elisp regular expression build problem

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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

1

1

I have the following line :

mod_name func_name /users/username/workspace/path_name/file.c 283

I wanted to capture the 3rd and 4th entry in this line, I am able
to do that using regular expressions like so:
^(?:S+s)2(S+) ([0-9]+)

How do I translate this into a lisp regex ? so that elisp functions can
understand. I couldn't use the above regex into re-builder within emacs. Says it is an invalid expression. What am I doing wrong ?

regular-expressions

share|improve this question

edited 5 hours ago

Drew

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asked 10 hours ago

maindoormaindoor

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add a comment | 

1

1

I have the following line :

mod_name func_name /users/username/workspace/path_name/file.c 283

I wanted to capture the 3rd and 4th entry in this line, I am able
to do that using regular expressions like so:
^(?:S+s)2(S+) ([0-9]+)

How do I translate this into a lisp regex ? so that elisp functions can
understand. I couldn't use the above regex into re-builder within emacs. Says it is an invalid expression. What am I doing wrong ?

regular-expressions

share|improve this question

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

asked 10 hours ago

maindoormaindoor

2044 bronze badges

add a comment | 

I have the following line :

mod_name func_name /users/username/workspace/path_name/file.c 283

I wanted to capture the 3rd and 4th entry in this line, I am able
to do that using regular expressions like so:
^(?:S+s)2(S+) ([0-9]+)

How do I translate this into a lisp regex ? so that elisp functions can
understand. I couldn't use the above regex into re-builder within emacs. Says it is an invalid expression. What am I doing wrong ?

regular-expressions

share|improve this question

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

asked 10 hours ago

maindoormaindoor

2044 bronze badges

mod_name func_name /users/username/workspace/path_name/file.c 283

share|improve this question

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

asked 10 hours ago

maindoormaindoor

2044 bronze badges

share|improve this question

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

asked 10 hours ago

maindoormaindoor

2044 bronze badges

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

asked 10 hours ago

maindoormaindoor

2044 bronze badges

asked 10 hours ago

maindoormaindoor

2044 bronze badges

1 Answer
1

active

oldest

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3

Emacs regexps do not use S or s for non-whitespace and whitepsace. See (info "(elisp) Syntax of Regexps") for details. You can evaluate that which will jump to the corresponding info page.

It's far easier and more readable to use the rx macro to create regexps in Emacs. Here is my translation to rx syntax of your example:

(rx line-start
 (= 2 (and (one-or-more any) " "))
 (group (one-or-more any))
 " "
 (group (one-or-more digit)))

And here is resulting regex string:

"^\(?:.+ \)\2\\(.+\) \([0-9]+\)"

Note that any which is expressed in regexps as "." does not match newlines in Emacs.

share|improve this answer

edited 5 hours ago

Drew

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answered 8 hours ago

clemeraclemera

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• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you explaining rx macro.
  
  – maindoor
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Drew Thanks for editing!
  
  – clemera
  37 mins ago
  

  
  
  
  

add a comment | 

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3

Emacs regexps do not use S or s for non-whitespace and whitepsace. See (info "(elisp) Syntax of Regexps") for details. You can evaluate that which will jump to the corresponding info page.

It's far easier and more readable to use the rx macro to create regexps in Emacs. Here is my translation to rx syntax of your example:

(rx line-start
 (= 2 (and (one-or-more any) " "))
 (group (one-or-more any))
 " "
 (group (one-or-more digit)))

And here is resulting regex string:

"^\(?:.+ \)\2\\(.+\) \([0-9]+\)"

Note that any which is expressed in regexps as "." does not match newlines in Emacs.

share|improve this answer

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

answered 8 hours ago

clemeraclemera

2,10066 silver badges2323 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you explaining rx macro.
  
  – maindoor
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Drew Thanks for editing!
  
  – clemera
  37 mins ago
  

  
  
  
  

add a comment | 

3

Emacs regexps do not use S or s for non-whitespace and whitepsace. See (info "(elisp) Syntax of Regexps") for details. You can evaluate that which will jump to the corresponding info page.

It's far easier and more readable to use the rx macro to create regexps in Emacs. Here is my translation to rx syntax of your example:

(rx line-start
 (= 2 (and (one-or-more any) " "))
 (group (one-or-more any))
 " "
 (group (one-or-more digit)))

And here is resulting regex string:

"^\(?:.+ \)\2\\(.+\) \([0-9]+\)"

Note that any which is expressed in regexps as "." does not match newlines in Emacs.

share|improve this answer

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

answered 8 hours ago

clemeraclemera

2,10066 silver badges2323 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you explaining rx macro.
  
  – maindoor
  5 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Drew Thanks for editing!
  
  – clemera
  37 mins ago
  

  
  
  
  

add a comment | 

Emacs regexps do not use S or s for non-whitespace and whitepsace. See (info "(elisp) Syntax of Regexps") for details. You can evaluate that which will jump to the corresponding info page.

It's far easier and more readable to use the rx macro to create regexps in Emacs. Here is my translation to rx syntax of your example:

(rx line-start
 (= 2 (and (one-or-more any) " "))
 (group (one-or-more any))
 " "
 (group (one-or-more digit)))

And here is resulting regex string:

"^\(?:.+ \)\2\\(.+\) \([0-9]+\)"

Note that any which is expressed in regexps as "." does not match newlines in Emacs.

share|improve this answer

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

answered 8 hours ago

clemeraclemera

2,10066 silver badges2323 bronze badges

(rx line-start
 (= 2 (and (one-or-more any) " "))
 (group (one-or-more any))
 " "
 (group (one-or-more digit)))

"^\(?:.+ \)\2\\(.+\) \([0-9]+\)"

share|improve this answer

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

answered 8 hours ago

clemeraclemera

2,10066 silver badges2323 bronze badges

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

edited 5 hours ago

Drew

50.7k44 gold badges6565 silver badges113113 bronze badges

answered 8 hours ago

clemeraclemera

2,10066 silver badges2323 bronze badges

answered 8 hours ago

clemeraclemera

2,10066 silver badges2323 bronze badges