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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;

2

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 Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Different regex syntaxes compared
  
  – Gilles♦
  Aug 12 at 8:44
  
  

  
  
  
  

add a comment | 

2

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 Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Different regex syntaxes compared
  
  – Gilles♦
  Aug 12 at 8:44
  
  

  
  
  
  

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 Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

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

share|improve this question

edited Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

share|improve this question

edited Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

edited Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

edited Aug 12 at 0:15

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

asked Aug 11 at 19:35

maindoormaindoor

2544 bronze badges

1 Answer
1

active

oldest

votes

5

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 Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you explaining rx macro.
  
  – maindoor
  Aug 11 at 23:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Drew Thanks for editing!
  
  – clemera
  Aug 12 at 5:10
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  '**any** which is expressed in regexps as "." does not match newlines in Emacs.' - you can also write it as not-newline or nonl to make that clearer.
  
  – npostavs
  Aug 12 at 13:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @npostavs Thanks, nice to know!
  
  – clemera
  Aug 12 at 13:19
  

  
  
  
  

add a comment | 

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5

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 Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you explaining rx macro.
  
  – maindoor
  Aug 11 at 23:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Drew Thanks for editing!
  
  – clemera
  Aug 12 at 5:10
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  '**any** which is expressed in regexps as "." does not match newlines in Emacs.' - you can also write it as not-newline or nonl to make that clearer.
  
  – npostavs
  Aug 12 at 13:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @npostavs Thanks, nice to know!
  
  – clemera
  Aug 12 at 13:19
  

  
  
  
  

add a comment | 

5

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 Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you explaining rx macro.
  
  – maindoor
  Aug 11 at 23:50
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Drew Thanks for editing!
  
  – clemera
  Aug 12 at 5:10
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  '**any** which is expressed in regexps as "." does not match newlines in Emacs.' - you can also write it as not-newline or nonl to make that clearer.
  
  – npostavs
  Aug 12 at 13:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @npostavs Thanks, nice to know!
  
  – clemera
  Aug 12 at 13:19
  

  
  
  
  

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 Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 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 Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 bronze badges

edited Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

edited Aug 12 at 0:19

Drew

50.9k44 gold badges6565 silver badges114114 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 bronze badges

answered Aug 11 at 21:27

clemeraclemera

2,16077 silver badges2626 bronze badges