Environment decorators
I'm looking for a way to write a "decorator" (in Python terminology) or a "wrapper" for LaTeX environments: a way to give addition behaviour with save of the notation. For example, before every begin{quote} execute a code that will add a hrule.
I could make it for a single command using let:
letoldCommandcommandIWantToDecorate
defcommandIWantToDecorate#1{<addition code>oldCommand{#1}}
That will execute <addition code> without the need to change the command throughout the document.
Is there a similar way to decorate the whole environment? Maybe LaTeX creates some inner macros I can work with?
UPD the question Can I redefine a command to contain itself? doesn't solve my problem, because I'm interested in redefining environments, not solo macros.
The etoolbox package partly solve the problem, thanks @samcarter!
But in "education" reasons I'm interesting is there a way to do decorate without additional packages, using just (La)TeX pre-build commands?
macros environments
asked 8 hours ago
Anton Lioznov
183
New contributor
Anton Lioznov 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 |
I'm looking for a way to write a "decorator" (in Python terminology) or a "wrapper" for LaTeX environments: a way to give addition behaviour with save of the notation. For example, before every begin{quote} execute a code that will add a hrule.
I could make it for a single command using let:
letoldCommandcommandIWantToDecorate
defcommandIWantToDecorate#1{<addition code>oldCommand{#1}}
That will execute <addition code> without the need to change the command throughout the document.
Is there a similar way to decorate the whole environment? Maybe LaTeX creates some inner macros I can work with?
UPD the question Can I redefine a command to contain itself? doesn't solve my problem, because I'm interested in redefining environments, not solo macros.
The etoolbox package partly solve the problem, thanks @samcarter!
But in "education" reasons I'm interesting is there a way to do decorate without additional packages, using just (La)TeX pre-build commands?
macros environments
asked 8 hours ago
Anton Lioznov
183
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
Possible duplicate of Can I redefine a command to contain itself?
– Timothy Truckle
8 hours ago
Welcome to TeX.Stackexchange!
– samcarter
7 hours ago
By the way, yourlet- version above would work for the environment starter macro as well, unless it has optional arguments -- then problems will appear
– Christian Hupfer
6 hours ago
add a comment |
I'm looking for a way to write a "decorator" (in Python terminology) or a "wrapper" for LaTeX environments: a way to give addition behaviour with save of the notation. For example, before every begin{quote} execute a code that will add a hrule.
I could make it for a single command using let:
letoldCommandcommandIWantToDecorate
defcommandIWantToDecorate#1{<addition code>oldCommand{#1}}
That will execute <addition code> without the need to change the command throughout the document.
Is there a similar way to decorate the whole environment? Maybe LaTeX creates some inner macros I can work with?
UPD the question Can I redefine a command to contain itself? doesn't solve my problem, because I'm interested in redefining environments, not solo macros.
The etoolbox package partly solve the problem, thanks @samcarter!
But in "education" reasons I'm interesting is there a way to do decorate without additional packages, using just (La)TeX pre-build commands?
macros environments
asked 8 hours ago
Anton Lioznov
183
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm looking for a way to write a "decorator" (in Python terminology) or a "wrapper" for LaTeX environments: a way to give addition behaviour with save of the notation. For example, before every begin{quote} execute a code that will add a hrule.
I could make it for a single command using let:
letoldCommandcommandIWantToDecorate
defcommandIWantToDecorate#1{<addition code>oldCommand{#1}}
That will execute <addition code> without the need to change the command throughout the document.
Is there a similar way to decorate the whole environment? Maybe LaTeX creates some inner macros I can work with?
UPD the question Can I redefine a command to contain itself? doesn't solve my problem, because I'm interested in redefining environments, not solo macros.
The etoolbox package partly solve the problem, thanks @samcarter!
But in "education" reasons I'm interesting is there a way to do decorate without additional packages, using just (La)TeX pre-build commands?
macros environments
macros environments
asked 8 hours ago
Anton Lioznov
183
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
Anton Lioznov
183
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 hours ago
asked 8 hours ago
Anton Lioznov
183
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
Anton Lioznov
183
asked 8 hours ago
Anton Lioznov
183
183
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Anton Lioznov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
Possible duplicate of Can I redefine a command to contain itself?
– Timothy Truckle
8 hours ago
Welcome to TeX.Stackexchange!
– samcarter
7 hours ago
By the way, yourlet- version above would work for the environment starter macro as well, unless it has optional arguments -- then problems will appear
– Christian Hupfer
6 hours ago
add a comment |
2
Possible duplicate of Can I redefine a command to contain itself?
– Timothy Truckle
8 hours ago
Welcome to TeX.Stackexchange!
– samcarter
7 hours ago
By the way, yourlet- version above would work for the environment starter macro as well, unless it has optional arguments -- then problems will appear
– Christian Hupfer
6 hours ago
2
2
Possible duplicate of Can I redefine a command to contain itself?
– Timothy Truckle
8 hours ago
Possible duplicate of Can I redefine a command to contain itself?
– Timothy Truckle
8 hours ago
Welcome to TeX.Stackexchange!
– samcarter
7 hours ago
Welcome to TeX.Stackexchange!
– samcarter
7 hours ago
By the way, your
let - version above would work for the environment starter macro as well, unless it has optional arguments -- then problems will appear– Christian Hupfer
6 hours ago
By the way, your
let - version above would work for the environment starter macro as well, unless it has optional arguments -- then problems will appear– Christian Hupfer
6 hours ago
add a comment |
2 Answers
2
active
oldest
votes
The LaTeX kernel provides g@addto@macro which works for the environment starter command as well, i.e. for the environment quote the start macro is quote, so say g@addto@macroquote{foo} etc.
No extra packages are needed for this, apart from the specific additions that are to be made, but that depends on personal choices of the O.P.
documentclass{book}
makeatletter
g@addto@macroquote{hrule
medskip
textit{be careful}
medskip
Now the real stuff beginsdots
}
makeatother
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 6 hours ago
Christian Hupfer
147k14191382
add a comment |
Have a look at the etoolbox package, in particular to its AtBeginEnvironment command. This allows you to add aditional code to the begin of environment.
documentclass{book}
usepackage{etoolbox}
AtBeginEnvironment{quote}{hrule}
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 8 hours ago
samcarter
85.5k794273
add a comment |
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2 Answers
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active
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2 Answers
2
active
oldest
votes
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votes
The LaTeX kernel provides g@addto@macro which works for the environment starter command as well, i.e. for the environment quote the start macro is quote, so say g@addto@macroquote{foo} etc.
No extra packages are needed for this, apart from the specific additions that are to be made, but that depends on personal choices of the O.P.
documentclass{book}
makeatletter
g@addto@macroquote{hrule
medskip
textit{be careful}
medskip
Now the real stuff beginsdots
}
makeatother
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 6 hours ago
Christian Hupfer
147k14191382
add a comment |
The LaTeX kernel provides g@addto@macro which works for the environment starter command as well, i.e. for the environment quote the start macro is quote, so say g@addto@macroquote{foo} etc.
No extra packages are needed for this, apart from the specific additions that are to be made, but that depends on personal choices of the O.P.
documentclass{book}
makeatletter
g@addto@macroquote{hrule
medskip
textit{be careful}
medskip
Now the real stuff beginsdots
}
makeatother
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 6 hours ago
Christian Hupfer
147k14191382
add a comment |
The LaTeX kernel provides g@addto@macro which works for the environment starter command as well, i.e. for the environment quote the start macro is quote, so say g@addto@macroquote{foo} etc.
No extra packages are needed for this, apart from the specific additions that are to be made, but that depends on personal choices of the O.P.
documentclass{book}
makeatletter
g@addto@macroquote{hrule
medskip
textit{be careful}
medskip
Now the real stuff beginsdots
}
makeatother
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 6 hours ago
Christian Hupfer
147k14191382
The LaTeX kernel provides g@addto@macro which works for the environment starter command as well, i.e. for the environment quote the start macro is quote, so say g@addto@macroquote{foo} etc.
No extra packages are needed for this, apart from the specific additions that are to be made, but that depends on personal choices of the O.P.
documentclass{book}
makeatletter
g@addto@macroquote{hrule
medskip
textit{be careful}
medskip
Now the real stuff beginsdots
}
makeatother
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 6 hours ago
Christian Hupfer
147k14191382
answered 6 hours ago
Christian Hupfer
147k14191382
answered 6 hours ago
Christian Hupfer
147k14191382
answered 6 hours ago
Christian Hupfer
147k14191382
147k14191382
add a comment |
add a comment |
Have a look at the etoolbox package, in particular to its AtBeginEnvironment command. This allows you to add aditional code to the begin of environment.
documentclass{book}
usepackage{etoolbox}
AtBeginEnvironment{quote}{hrule}
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 8 hours ago
samcarter
85.5k794273
add a comment |
Have a look at the etoolbox package, in particular to its AtBeginEnvironment command. This allows you to add aditional code to the begin of environment.
documentclass{book}
usepackage{etoolbox}
AtBeginEnvironment{quote}{hrule}
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 8 hours ago
samcarter
85.5k794273
add a comment |
Have a look at the etoolbox package, in particular to its AtBeginEnvironment command. This allows you to add aditional code to the begin of environment.
documentclass{book}
usepackage{etoolbox}
AtBeginEnvironment{quote}{hrule}
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 8 hours ago
samcarter
85.5k794273
Have a look at the etoolbox package, in particular to its AtBeginEnvironment command. This allows you to add aditional code to the begin of environment.
documentclass{book}
usepackage{etoolbox}
AtBeginEnvironment{quote}{hrule}
begin{document}
begin{quote}
test
end{quote}
end{document}
answered 8 hours ago
samcarter
85.5k794273
answered 8 hours ago
samcarter
85.5k794273
answered 8 hours ago
samcarter
85.5k794273
answered 8 hours ago
samcarter
85.5k794273
85.5k794273
add a comment |
add a comment |
Anton Lioznov is a new contributor. Be nice, and check out our Code of Conduct.
Anton Lioznov is a new contributor. Be nice, and check out our Code of Conduct.
Anton Lioznov is a new contributor. Be nice, and check out our Code of Conduct.
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2
Possible duplicate of Can I redefine a command to contain itself?
– Timothy Truckle
8 hours ago
Welcome to TeX.Stackexchange!
– samcarter
7 hours ago
By the way, your
let- version above would work for the environment starter macro as well, unless it has optional arguments -- then problems will appear– Christian Hupfer
6 hours ago