Gnu sed regular expression extension, how to type these two characters?
This may be a stupid question, but I'm not sure and just want to confirm. Gnu sed has some regular expression extensions that work in both BRE and ERE mode. The following are an excerpt from the sed documentation:
My question is, how can I type these two characters in the red square? It seems that they are not in the basic ASCII table and when I copy it from the pdf document and paste to some other place, it looks like a two-byte Unicode character.
sed regex
asked Jan 5 at 13:04
Ogrish ManOgrish Man
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This may be a stupid question, but I'm not sure and just want to confirm. Gnu sed has some regular expression extensions that work in both BRE and ERE mode. The following are an excerpt from the sed documentation:
My question is, how can I type these two characters in the red square? It seems that they are not in the basic ASCII table and when I copy it from the pdf document and paste to some other place, it looks like a two-byte Unicode character.
sed regex
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
This may be a stupid question, but I'm not sure and just want to confirm. Gnu sed has some regular expression extensions that work in both BRE and ERE mode. The following are an excerpt from the sed documentation:
My question is, how can I type these two characters in the red square? It seems that they are not in the basic ASCII table and when I copy it from the pdf document and paste to some other place, it looks like a two-byte Unicode character.
sed regex
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
This may be a stupid question, but I'm not sure and just want to confirm. Gnu sed has some regular expression extensions that work in both BRE and ERE mode. The following are an excerpt from the sed documentation:
My question is, how can I type these two characters in the red square? It seems that they are not in the basic ASCII table and when I copy it from the pdf document and paste to some other place, it looks like a two-byte Unicode character.
sed regex
sed regex
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
asked Jan 5 at 13:04
Ogrish ManOgrish Man
1423
1423
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Ogrish Man is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
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That's a back quote (`) in first red square and single quote (') in second red square. From regexp extensions (sed, a stream editor) - GNU
`
Matches only at the start of pattern space. This is different from ^ in multi-line mode.
Compare the following two examples:
$ printf "anbncn" | sed 'N;N;s/^/X/gm'
Xa
Xb
Xc
$ printf "anbncn" | sed 'N;N;s/`/X/gm'
Xa
b
c
'
Matches only at the end of pattern space. This is different from $ in multi-line mode.
That's generally with ~ above Tab key in main keyboard.
The text on your screenshot looks different may be because of custom fonts.
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
The "custom font" is Computer Modern Typewriter (cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.
– AlexP
2 days ago
add a comment |
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1 Answer
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1 Answer
1
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oldest
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active
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votes
That's a back quote (`) in first red square and single quote (') in second red square. From regexp extensions (sed, a stream editor) - GNU
`
Matches only at the start of pattern space. This is different from ^ in multi-line mode.
Compare the following two examples:
$ printf "anbncn" | sed 'N;N;s/^/X/gm'
Xa
Xb
Xc
$ printf "anbncn" | sed 'N;N;s/`/X/gm'
Xa
b
c
'
Matches only at the end of pattern space. This is different from $ in multi-line mode.
That's generally with ~ above Tab key in main keyboard.
The text on your screenshot looks different may be because of custom fonts.
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
The "custom font" is Computer Modern Typewriter (cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.
– AlexP
2 days ago
add a comment |
That's a back quote (`) in first red square and single quote (') in second red square. From regexp extensions (sed, a stream editor) - GNU
`
Matches only at the start of pattern space. This is different from ^ in multi-line mode.
Compare the following two examples:
$ printf "anbncn" | sed 'N;N;s/^/X/gm'
Xa
Xb
Xc
$ printf "anbncn" | sed 'N;N;s/`/X/gm'
Xa
b
c
'
Matches only at the end of pattern space. This is different from $ in multi-line mode.
That's generally with ~ above Tab key in main keyboard.
The text on your screenshot looks different may be because of custom fonts.
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
The "custom font" is Computer Modern Typewriter (cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.
– AlexP
2 days ago
add a comment |
That's a back quote (`) in first red square and single quote (') in second red square. From regexp extensions (sed, a stream editor) - GNU
`
Matches only at the start of pattern space. This is different from ^ in multi-line mode.
Compare the following two examples:
$ printf "anbncn" | sed 'N;N;s/^/X/gm'
Xa
Xb
Xc
$ printf "anbncn" | sed 'N;N;s/`/X/gm'
Xa
b
c
'
Matches only at the end of pattern space. This is different from $ in multi-line mode.
That's generally with ~ above Tab key in main keyboard.
The text on your screenshot looks different may be because of custom fonts.
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
That's a back quote (`) in first red square and single quote (') in second red square. From regexp extensions (sed, a stream editor) - GNU
`
Matches only at the start of pattern space. This is different from ^ in multi-line mode.
Compare the following two examples:
$ printf "anbncn" | sed 'N;N;s/^/X/gm'
Xa
Xb
Xc
$ printf "anbncn" | sed 'N;N;s/`/X/gm'
Xa
b
c
'
Matches only at the end of pattern space. This is different from $ in multi-line mode.
That's generally with ~ above Tab key in main keyboard.
The text on your screenshot looks different may be because of custom fonts.
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
edited 2 days ago
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
answered Jan 5 at 13:13
KulfyKulfy
3,70341139
3,70341139
The "custom font" is Computer Modern Typewriter (cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.
– AlexP
2 days ago
add a comment |
The "custom font" is Computer Modern Typewriter (cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.
– AlexP
2 days ago
The "custom font" is Computer Modern Typewriter (
cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.– AlexP
2 days ago
The "custom font" is Computer Modern Typewriter (
cmtt), one of the default fonts used with TeX (and, thus, GNU's pet favorite Texinfo). There are tons and tons of documentation typeset with the Computer Modern family; one ought to strive to become acquainted with its old-school appearance.– AlexP
2 days ago
add a comment |
Ogrish Man is a new contributor. Be nice, and check out our Code of Conduct.
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