Variant of left, right, …that gets ignored in inlinemath
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1
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I am trying to construct a variant of left, right, and middle that are ignored in inlinemath.
Intended behavior:
[ lft( 2^{2^2} rgt) ] -> behaves as [ left( 2^{2^2} right) ]
( lft( 2^{2^2} rgt) ) -> behaves as ( ( 2^{2^2} ) )
Help would be much appreciated.
Disclaimer:
- Attempts to get this behavior using
mathchoicewas not successful.
The problem seems to be that stuff likemathchoice{left}{}{}{}is invalid because TeX expects the delimiter (and the correspondingright) within the same group. - Attempts to get the desired behavior by influencing the order of expansion (e.g. with
noexpand) were unsuccessful, but I'm not a pro regarding this stuff. - I know that some people think that one should not automate the usage of
leftandright. I would like to have this anyhow (-: - I know that I could simply defining something like
newcommand{paren}[1]{mathchoice{left(#1right)}{(#1)}{(#1)}{(#1)}}. However, my problem still occurs if the argument containsmiddle.
delimiters
asked Dec 5 at 22:56
LaReine
82
add a comment |
up vote
1
down vote
favorite
I am trying to construct a variant of left, right, and middle that are ignored in inlinemath.
Intended behavior:
[ lft( 2^{2^2} rgt) ] -> behaves as [ left( 2^{2^2} right) ]
( lft( 2^{2^2} rgt) ) -> behaves as ( ( 2^{2^2} ) )
Help would be much appreciated.
Disclaimer:
- Attempts to get this behavior using
mathchoicewas not successful.
The problem seems to be that stuff likemathchoice{left}{}{}{}is invalid because TeX expects the delimiter (and the correspondingright) within the same group. - Attempts to get the desired behavior by influencing the order of expansion (e.g. with
noexpand) were unsuccessful, but I'm not a pro regarding this stuff. - I know that some people think that one should not automate the usage of
leftandright. I would like to have this anyhow (-: - I know that I could simply defining something like
newcommand{paren}[1]{mathchoice{left(#1right)}{(#1)}{(#1)}{(#1)}}. However, my problem still occurs if the argument containsmiddle.
delimiters
asked Dec 5 at 22:56
LaReine
82
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I am trying to construct a variant of left, right, and middle that are ignored in inlinemath.
Intended behavior:
[ lft( 2^{2^2} rgt) ] -> behaves as [ left( 2^{2^2} right) ]
( lft( 2^{2^2} rgt) ) -> behaves as ( ( 2^{2^2} ) )
Help would be much appreciated.
Disclaimer:
- Attempts to get this behavior using
mathchoicewas not successful.
The problem seems to be that stuff likemathchoice{left}{}{}{}is invalid because TeX expects the delimiter (and the correspondingright) within the same group. - Attempts to get the desired behavior by influencing the order of expansion (e.g. with
noexpand) were unsuccessful, but I'm not a pro regarding this stuff. - I know that some people think that one should not automate the usage of
leftandright. I would like to have this anyhow (-: - I know that I could simply defining something like
newcommand{paren}[1]{mathchoice{left(#1right)}{(#1)}{(#1)}{(#1)}}. However, my problem still occurs if the argument containsmiddle.
delimiters
asked Dec 5 at 22:56
LaReine
82
I am trying to construct a variant of left, right, and middle that are ignored in inlinemath.
Intended behavior:
[ lft( 2^{2^2} rgt) ] -> behaves as [ left( 2^{2^2} right) ]
( lft( 2^{2^2} rgt) ) -> behaves as ( ( 2^{2^2} ) )
Help would be much appreciated.
Disclaimer:
- Attempts to get this behavior using
mathchoicewas not successful.
The problem seems to be that stuff likemathchoice{left}{}{}{}is invalid because TeX expects the delimiter (and the correspondingright) within the same group. - Attempts to get the desired behavior by influencing the order of expansion (e.g. with
noexpand) were unsuccessful, but I'm not a pro regarding this stuff. - I know that some people think that one should not automate the usage of
leftandright. I would like to have this anyhow (-: - I know that I could simply defining something like
newcommand{paren}[1]{mathchoice{left(#1right)}{(#1)}{(#1)}{(#1)}}. However, my problem still occurs if the argument containsmiddle.
delimiters
delimiters
asked Dec 5 at 22:56
LaReine
82
asked Dec 5 at 22:56
LaReine
82
asked Dec 5 at 22:56
LaReine
82
asked Dec 5 at 22:56
LaReine
82
asked Dec 5 at 22:56
LaReine
82
82
add a comment |
add a comment |
1 Answer
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Not sure how useful this can be.
documentclass{article}
usepackage{amsmath}
makeatletter
newcommand{lft}{if@displayexpandafterleftfi}
newcommand{mdl}{if@displayexpandaftermiddlefi}
newcommand{rgt}{if@displayexpandafterrightfi}
makeatother
begin{document}
begin{center}% just to make a smaller picture
( lft( 2^{2^2} rgt) )
end{center}
[
lft( 2^{2^2} rgt)
]
end{document}
Explanation: amsmath does everydisplay{@displaytrue}.
answered Dec 5 at 23:03
egreg
704k8618763155
Why are theexpandafters needed here?
– user125730
Dec 6 at 0:29
@user125730 They are not strictly needed, becauseleft,middleandrightwill expand thefianyway, but getting rid of thefibefore delivering the “true” or “false” texts is generally better.
– egreg
Dec 6 at 9:03
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
accepted
Not sure how useful this can be.
documentclass{article}
usepackage{amsmath}
makeatletter
newcommand{lft}{if@displayexpandafterleftfi}
newcommand{mdl}{if@displayexpandaftermiddlefi}
newcommand{rgt}{if@displayexpandafterrightfi}
makeatother
begin{document}
begin{center}% just to make a smaller picture
( lft( 2^{2^2} rgt) )
end{center}
[
lft( 2^{2^2} rgt)
]
end{document}
Explanation: amsmath does everydisplay{@displaytrue}.
answered Dec 5 at 23:03
egreg
704k8618763155
Why are theexpandafters needed here?
– user125730
Dec 6 at 0:29
@user125730 They are not strictly needed, becauseleft,middleandrightwill expand thefianyway, but getting rid of thefibefore delivering the “true” or “false” texts is generally better.
– egreg
Dec 6 at 9:03
add a comment |
up vote
3
down vote
accepted
Not sure how useful this can be.
documentclass{article}
usepackage{amsmath}
makeatletter
newcommand{lft}{if@displayexpandafterleftfi}
newcommand{mdl}{if@displayexpandaftermiddlefi}
newcommand{rgt}{if@displayexpandafterrightfi}
makeatother
begin{document}
begin{center}% just to make a smaller picture
( lft( 2^{2^2} rgt) )
end{center}
[
lft( 2^{2^2} rgt)
]
end{document}
Explanation: amsmath does everydisplay{@displaytrue}.
answered Dec 5 at 23:03
egreg
704k8618763155
Why are theexpandafters needed here?
– user125730
Dec 6 at 0:29
@user125730 They are not strictly needed, becauseleft,middleandrightwill expand thefianyway, but getting rid of thefibefore delivering the “true” or “false” texts is generally better.
– egreg
Dec 6 at 9:03
add a comment |
up vote
3
down vote
accepted
up vote
3
down vote
accepted
Not sure how useful this can be.
documentclass{article}
usepackage{amsmath}
makeatletter
newcommand{lft}{if@displayexpandafterleftfi}
newcommand{mdl}{if@displayexpandaftermiddlefi}
newcommand{rgt}{if@displayexpandafterrightfi}
makeatother
begin{document}
begin{center}% just to make a smaller picture
( lft( 2^{2^2} rgt) )
end{center}
[
lft( 2^{2^2} rgt)
]
end{document}
Explanation: amsmath does everydisplay{@displaytrue}.
answered Dec 5 at 23:03
egreg
704k8618763155
Not sure how useful this can be.
documentclass{article}
usepackage{amsmath}
makeatletter
newcommand{lft}{if@displayexpandafterleftfi}
newcommand{mdl}{if@displayexpandaftermiddlefi}
newcommand{rgt}{if@displayexpandafterrightfi}
makeatother
begin{document}
begin{center}% just to make a smaller picture
( lft( 2^{2^2} rgt) )
end{center}
[
lft( 2^{2^2} rgt)
]
end{document}
Explanation: amsmath does everydisplay{@displaytrue}.
answered Dec 5 at 23:03
egreg
704k8618763155
answered Dec 5 at 23:03
egreg
704k8618763155
answered Dec 5 at 23:03
egreg
704k8618763155
answered Dec 5 at 23:03
egreg
704k8618763155
704k8618763155
Why are theexpandafters needed here?
– user125730
Dec 6 at 0:29
@user125730 They are not strictly needed, becauseleft,middleandrightwill expand thefianyway, but getting rid of thefibefore delivering the “true” or “false” texts is generally better.
– egreg
Dec 6 at 9:03
add a comment |
Why are theexpandafters needed here?
– user125730
Dec 6 at 0:29
@user125730 They are not strictly needed, becauseleft,middleandrightwill expand thefianyway, but getting rid of thefibefore delivering the “true” or “false” texts is generally better.
– egreg
Dec 6 at 9:03
Why are the
expandafters needed here?– user125730
Dec 6 at 0:29
Why are the
expandafters needed here?– user125730
Dec 6 at 0:29
@user125730 They are not strictly needed, because
left, middle and right will expand the fi anyway, but getting rid of the fi before delivering the “true” or “false” texts is generally better.– egreg
Dec 6 at 9:03
@user125730 They are not strictly needed, because
left, middle and right will expand the fi anyway, but getting rid of the fi before delivering the “true” or “false” texts is generally better.– egreg
Dec 6 at 9:03
add a comment |
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