A command challenge
6
Here's a little challenge. The goal is to create a command that takes is two or three arguments without using square brackets for optional arguments. The first and second argument are separated by a comma and a space, while the second and the third (if present) are separated by a dash. This means that both of the following inputs should be acceptable
mycommand{arg_1, arg_2}
and
mycommand{arg_1, arg_2-arg_3}
The definition of what mycommand does with the two/three arguments is irrelevant to the problem.
macros expl3 xparse
asked 4 hours ago
noibenoibe
935
add a comment |
6
Here's a little challenge. The goal is to create a command that takes is two or three arguments without using square brackets for optional arguments. The first and second argument are separated by a comma and a space, while the second and the third (if present) are separated by a dash. This means that both of the following inputs should be acceptable
mycommand{arg_1, arg_2}
and
mycommand{arg_1, arg_2-arg_3}
The definition of what mycommand does with the two/three arguments is irrelevant to the problem.
macros expl3 xparse
asked 4 hours ago
noibenoibe
935
1
That's one argument from a TeX point of view ... I guess you want a parser for that one document-level argument.
– Joseph Wright♦
4 hours ago
Trydefmycommand#1,space#2-#3{...}.
– John Kormylo
48 mins ago
add a comment |
6
6
6
1
Here's a little challenge. The goal is to create a command that takes is two or three arguments without using square brackets for optional arguments. The first and second argument are separated by a comma and a space, while the second and the third (if present) are separated by a dash. This means that both of the following inputs should be acceptable
mycommand{arg_1, arg_2}
and
mycommand{arg_1, arg_2-arg_3}
The definition of what mycommand does with the two/three arguments is irrelevant to the problem.
macros expl3 xparse
asked 4 hours ago
noibenoibe
935
Here's a little challenge. The goal is to create a command that takes is two or three arguments without using square brackets for optional arguments. The first and second argument are separated by a comma and a space, while the second and the third (if present) are separated by a dash. This means that both of the following inputs should be acceptable
mycommand{arg_1, arg_2}
and
mycommand{arg_1, arg_2-arg_3}
The definition of what mycommand does with the two/three arguments is irrelevant to the problem.
macros expl3 xparse
macros expl3 xparse
asked 4 hours ago
noibenoibe
935
asked 4 hours ago
noibenoibe
935
asked 4 hours ago
noibenoibe
935
asked 4 hours ago
noibenoibe
935
asked 4 hours ago
noibenoibe
935
935
1
That's one argument from a TeX point of view ... I guess you want a parser for that one document-level argument.
– Joseph Wright♦
4 hours ago
Trydefmycommand#1,space#2-#3{...}.
– John Kormylo
48 mins ago
add a comment |
1
That's one argument from a TeX point of view ... I guess you want a parser for that one document-level argument.
– Joseph Wright♦
4 hours ago
Trydefmycommand#1,space#2-#3{...}.
– John Kormylo
48 mins ago
1
1
That's one argument from a TeX point of view ... I guess you want a parser for that one document-level argument.
– Joseph Wright♦
4 hours ago
That's one argument from a TeX point of view ... I guess you want a parser for that one document-level argument.
– Joseph Wright♦
4 hours ago
Try
defmycommand#1,space#2-#3{...}.– John Kormylo
48 mins ago
Try
defmycommand#1,space#2-#3{...}.– John Kormylo
48 mins ago
add a comment |
3 Answers
3
active
oldest
votes
7
You can do it with xparse:
documentclass{article}
usepackage{xparse}
% split at the comma
NewDocumentCommand{mycommand}{ >{SplitArgument{1}{,}}m }{%
mycommandA#1%
}
% do something with #1 and split the second part at the hyphen
NewDocumentCommand{mycommandA}{ m >{SplitArgument{1}{-}}m }{%
Main is #1%
IfNoValueTF{#2}{.}{; mycommandB#2}%
}
% do something with the second part
NewDocumentCommand{mycommandB}{mm}{%
Secondary is #1IfValueT{#2}{ plus #2}.%
}
begin{document}
mycommand{arg1}
mycommand{arg1, arg2}
mycommand{arg1, arg2-arg3}
end{document}
An advantage: it's irrelevant if you forget the space after the comma.
answered 4 hours ago
egregegreg
718k8719043200
add a comment |
10
documentclass{article}
defmycommand#1{xmycommand#1--relax}
defxmycommand#1,#2-#3-#4relax{[#1][#2][#3]}
begin{document}
$mycommand{arg_1, arg_2}$
$mycommand{arg_1, arg_2-arg3}$
end{document}
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
6
Even without electricity. I'm impressed!
– marmot
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
2
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
|
show 2 more comments
2
A listofitems approach.
documentclass{article}
usepackage{listofitems}
newcommandmycommand[1]{setsepchar{,/-}readlist*myargs{#1}%
noindent Arg 1 is myargs[1]\
Arg 2 is myargs[2,1]\
Arg 3 is ifnumlistlenmyargs[2]=1relax Absentelsemyargs[2,2]fi%
}
begin{document}
mycommand{arg1, arg2}
and
mycommand{arg1, arg2-arg3}
end{document}
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
7
You can do it with xparse:
documentclass{article}
usepackage{xparse}
% split at the comma
NewDocumentCommand{mycommand}{ >{SplitArgument{1}{,}}m }{%
mycommandA#1%
}
% do something with #1 and split the second part at the hyphen
NewDocumentCommand{mycommandA}{ m >{SplitArgument{1}{-}}m }{%
Main is #1%
IfNoValueTF{#2}{.}{; mycommandB#2}%
}
% do something with the second part
NewDocumentCommand{mycommandB}{mm}{%
Secondary is #1IfValueT{#2}{ plus #2}.%
}
begin{document}
mycommand{arg1}
mycommand{arg1, arg2}
mycommand{arg1, arg2-arg3}
end{document}
An advantage: it's irrelevant if you forget the space after the comma.
answered 4 hours ago
egregegreg
718k8719043200
add a comment |
7
You can do it with xparse:
documentclass{article}
usepackage{xparse}
% split at the comma
NewDocumentCommand{mycommand}{ >{SplitArgument{1}{,}}m }{%
mycommandA#1%
}
% do something with #1 and split the second part at the hyphen
NewDocumentCommand{mycommandA}{ m >{SplitArgument{1}{-}}m }{%
Main is #1%
IfNoValueTF{#2}{.}{; mycommandB#2}%
}
% do something with the second part
NewDocumentCommand{mycommandB}{mm}{%
Secondary is #1IfValueT{#2}{ plus #2}.%
}
begin{document}
mycommand{arg1}
mycommand{arg1, arg2}
mycommand{arg1, arg2-arg3}
end{document}
An advantage: it's irrelevant if you forget the space after the comma.
answered 4 hours ago
egregegreg
718k8719043200
add a comment |
7
7
7
You can do it with xparse:
documentclass{article}
usepackage{xparse}
% split at the comma
NewDocumentCommand{mycommand}{ >{SplitArgument{1}{,}}m }{%
mycommandA#1%
}
% do something with #1 and split the second part at the hyphen
NewDocumentCommand{mycommandA}{ m >{SplitArgument{1}{-}}m }{%
Main is #1%
IfNoValueTF{#2}{.}{; mycommandB#2}%
}
% do something with the second part
NewDocumentCommand{mycommandB}{mm}{%
Secondary is #1IfValueT{#2}{ plus #2}.%
}
begin{document}
mycommand{arg1}
mycommand{arg1, arg2}
mycommand{arg1, arg2-arg3}
end{document}
An advantage: it's irrelevant if you forget the space after the comma.
answered 4 hours ago
egregegreg
718k8719043200
You can do it with xparse:
documentclass{article}
usepackage{xparse}
% split at the comma
NewDocumentCommand{mycommand}{ >{SplitArgument{1}{,}}m }{%
mycommandA#1%
}
% do something with #1 and split the second part at the hyphen
NewDocumentCommand{mycommandA}{ m >{SplitArgument{1}{-}}m }{%
Main is #1%
IfNoValueTF{#2}{.}{; mycommandB#2}%
}
% do something with the second part
NewDocumentCommand{mycommandB}{mm}{%
Secondary is #1IfValueT{#2}{ plus #2}.%
}
begin{document}
mycommand{arg1}
mycommand{arg1, arg2}
mycommand{arg1, arg2-arg3}
end{document}
An advantage: it's irrelevant if you forget the space after the comma.
answered 4 hours ago
egregegreg
718k8719043200
answered 4 hours ago
egregegreg
718k8719043200
answered 4 hours ago
egregegreg
718k8719043200
answered 4 hours ago
egregegreg
718k8719043200
718k8719043200
add a comment |
add a comment |
10
documentclass{article}
defmycommand#1{xmycommand#1--relax}
defxmycommand#1,#2-#3-#4relax{[#1][#2][#3]}
begin{document}
$mycommand{arg_1, arg_2}$
$mycommand{arg_1, arg_2-arg3}$
end{document}
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
6
Even without electricity. I'm impressed!
– marmot
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
2
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
|
show 2 more comments
10
documentclass{article}
defmycommand#1{xmycommand#1--relax}
defxmycommand#1,#2-#3-#4relax{[#1][#2][#3]}
begin{document}
$mycommand{arg_1, arg_2}$
$mycommand{arg_1, arg_2-arg3}$
end{document}
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
6
Even without electricity. I'm impressed!
– marmot
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
2
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
|
show 2 more comments
10
10
10
documentclass{article}
defmycommand#1{xmycommand#1--relax}
defxmycommand#1,#2-#3-#4relax{[#1][#2][#3]}
begin{document}
$mycommand{arg_1, arg_2}$
$mycommand{arg_1, arg_2-arg3}$
end{document}
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
documentclass{article}
defmycommand#1{xmycommand#1--relax}
defxmycommand#1,#2-#3-#4relax{[#1][#2][#3]}
begin{document}
$mycommand{arg_1, arg_2}$
$mycommand{arg_1, arg_2-arg3}$
end{document}
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
answered 4 hours ago
David CarlisleDavid Carlisle
489k4111321880
489k4111321880
6
Even without electricity. I'm impressed!
– marmot
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
2
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
|
show 2 more comments
6
Even without electricity. I'm impressed!
– marmot
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
2
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
6
6
Even without electricity. I'm impressed!
– marmot
4 hours ago
Even without electricity. I'm impressed!
– marmot
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
How about adding some mortar to the bricks!?
– Werner
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@Werner where I come from we prefer this style: derbyshireuk.net/derbyshire_drystonewalls.html
– David Carlisle
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
@DavidCarlisle: It seems drafty... :D
– Werner
4 hours ago
2
2
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
@noibe oh no a disaster! I don't mind not getting the tick (I have more than enough points) but seeing points go to egreg is so depressing:)
– David Carlisle
3 hours ago
|
show 2 more comments
2
A listofitems approach.
documentclass{article}
usepackage{listofitems}
newcommandmycommand[1]{setsepchar{,/-}readlist*myargs{#1}%
noindent Arg 1 is myargs[1]\
Arg 2 is myargs[2,1]\
Arg 3 is ifnumlistlenmyargs[2]=1relax Absentelsemyargs[2,2]fi%
}
begin{document}
mycommand{arg1, arg2}
and
mycommand{arg1, arg2-arg3}
end{document}
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
add a comment |
2
A listofitems approach.
documentclass{article}
usepackage{listofitems}
newcommandmycommand[1]{setsepchar{,/-}readlist*myargs{#1}%
noindent Arg 1 is myargs[1]\
Arg 2 is myargs[2,1]\
Arg 3 is ifnumlistlenmyargs[2]=1relax Absentelsemyargs[2,2]fi%
}
begin{document}
mycommand{arg1, arg2}
and
mycommand{arg1, arg2-arg3}
end{document}
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
add a comment |
2
2
2
A listofitems approach.
documentclass{article}
usepackage{listofitems}
newcommandmycommand[1]{setsepchar{,/-}readlist*myargs{#1}%
noindent Arg 1 is myargs[1]\
Arg 2 is myargs[2,1]\
Arg 3 is ifnumlistlenmyargs[2]=1relax Absentelsemyargs[2,2]fi%
}
begin{document}
mycommand{arg1, arg2}
and
mycommand{arg1, arg2-arg3}
end{document}
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
A listofitems approach.
documentclass{article}
usepackage{listofitems}
newcommandmycommand[1]{setsepchar{,/-}readlist*myargs{#1}%
noindent Arg 1 is myargs[1]\
Arg 2 is myargs[2,1]\
Arg 3 is ifnumlistlenmyargs[2]=1relax Absentelsemyargs[2,2]fi%
}
begin{document}
mycommand{arg1, arg2}
and
mycommand{arg1, arg2-arg3}
end{document}
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
answered 3 hours ago
Steven B. SegletesSteven B. Segletes
154k9198405
154k9198405
add a comment |
add a comment |
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1
That's one argument from a TeX point of view ... I guess you want a parser for that one document-level argument.
– Joseph Wright♦
4 hours ago
Try
defmycommand#1,space#2-#3{...}.– John Kormylo
48 mins ago