Kerning for subscripts of sigma?
Is there any way to reduce the distance inside σ₀ and between sigma
and its subscript in general in the following setup automatically? That is, each time you type in sigma_0
(or sigma_1
etc.), you wish the actual output to be more consistent with sigma_{!0}
(or sigma_{!1}
etc.).
Input:
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
[sigma_0 sigma_0]
[sigma_{!0} sigma_{!0}]
end{document}
Output so far:
As you see, in the upper line the left zero seems to be more close to the right σ (which doesn't make any sense) than to the left one (which would make sense). The kerning in the lower line makes more sense.
I guess, this would be easier than Subscript kerning for specific letters in XeLaTeX, since we already have sigma
as a macro and can redefine it.
For which letters in the subscript position the kerning should be improved (and how) is intentionally left unspecified; improving the kerning in sigma_<any single arabic digit or any single Latin small letter>
would suffice as a start. Of course, for σ_{mathrm{T}} we might need less kerning (e.g., only -1mu rather than -3mu), and that's why capital Latin letters would need more work (and are not asked for in the first step). As of now, I intend to use the following subscripts: all the digits, i, j, k, k (yes, this one upright), n, i + 1, i - 1.
xetex microtype kerning
add a comment |
Is there any way to reduce the distance inside σ₀ and between sigma
and its subscript in general in the following setup automatically? That is, each time you type in sigma_0
(or sigma_1
etc.), you wish the actual output to be more consistent with sigma_{!0}
(or sigma_{!1}
etc.).
Input:
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
[sigma_0 sigma_0]
[sigma_{!0} sigma_{!0}]
end{document}
Output so far:
As you see, in the upper line the left zero seems to be more close to the right σ (which doesn't make any sense) than to the left one (which would make sense). The kerning in the lower line makes more sense.
I guess, this would be easier than Subscript kerning for specific letters in XeLaTeX, since we already have sigma
as a macro and can redefine it.
For which letters in the subscript position the kerning should be improved (and how) is intentionally left unspecified; improving the kerning in sigma_<any single arabic digit or any single Latin small letter>
would suffice as a start. Of course, for σ_{mathrm{T}} we might need less kerning (e.g., only -1mu rather than -3mu), and that's why capital Latin letters would need more work (and are not asked for in the first step). As of now, I intend to use the following subscripts: all the digits, i, j, k, k (yes, this one upright), n, i + 1, i - 1.
xetex microtype kerning
Do you want to change the behaviour forsigma_<any single number>
, or forsigma_<any single character>
, orsigma_<anything>
, or somthing else?
– Phelype Oleinik
3 hours ago
@PhelypeOleinik Question updated.
– user49915
2 hours ago
add a comment |
Is there any way to reduce the distance inside σ₀ and between sigma
and its subscript in general in the following setup automatically? That is, each time you type in sigma_0
(or sigma_1
etc.), you wish the actual output to be more consistent with sigma_{!0}
(or sigma_{!1}
etc.).
Input:
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
[sigma_0 sigma_0]
[sigma_{!0} sigma_{!0}]
end{document}
Output so far:
As you see, in the upper line the left zero seems to be more close to the right σ (which doesn't make any sense) than to the left one (which would make sense). The kerning in the lower line makes more sense.
I guess, this would be easier than Subscript kerning for specific letters in XeLaTeX, since we already have sigma
as a macro and can redefine it.
For which letters in the subscript position the kerning should be improved (and how) is intentionally left unspecified; improving the kerning in sigma_<any single arabic digit or any single Latin small letter>
would suffice as a start. Of course, for σ_{mathrm{T}} we might need less kerning (e.g., only -1mu rather than -3mu), and that's why capital Latin letters would need more work (and are not asked for in the first step). As of now, I intend to use the following subscripts: all the digits, i, j, k, k (yes, this one upright), n, i + 1, i - 1.
xetex microtype kerning
Is there any way to reduce the distance inside σ₀ and between sigma
and its subscript in general in the following setup automatically? That is, each time you type in sigma_0
(or sigma_1
etc.), you wish the actual output to be more consistent with sigma_{!0}
(or sigma_{!1}
etc.).
Input:
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
[sigma_0 sigma_0]
[sigma_{!0} sigma_{!0}]
end{document}
Output so far:
As you see, in the upper line the left zero seems to be more close to the right σ (which doesn't make any sense) than to the left one (which would make sense). The kerning in the lower line makes more sense.
I guess, this would be easier than Subscript kerning for specific letters in XeLaTeX, since we already have sigma
as a macro and can redefine it.
For which letters in the subscript position the kerning should be improved (and how) is intentionally left unspecified; improving the kerning in sigma_<any single arabic digit or any single Latin small letter>
would suffice as a start. Of course, for σ_{mathrm{T}} we might need less kerning (e.g., only -1mu rather than -3mu), and that's why capital Latin letters would need more work (and are not asked for in the first step). As of now, I intend to use the following subscripts: all the digits, i, j, k, k (yes, this one upright), n, i + 1, i - 1.
xetex microtype kerning
xetex microtype kerning
edited 50 mins ago
user49915
asked 3 hours ago
user49915user49915
759122
759122
Do you want to change the behaviour forsigma_<any single number>
, or forsigma_<any single character>
, orsigma_<anything>
, or somthing else?
– Phelype Oleinik
3 hours ago
@PhelypeOleinik Question updated.
– user49915
2 hours ago
add a comment |
Do you want to change the behaviour forsigma_<any single number>
, or forsigma_<any single character>
, orsigma_<anything>
, or somthing else?
– Phelype Oleinik
3 hours ago
@PhelypeOleinik Question updated.
– user49915
2 hours ago
Do you want to change the behaviour for
sigma_<any single number>
, or for sigma_<any single character>
, or sigma_<anything>
, or somthing else?– Phelype Oleinik
3 hours ago
Do you want to change the behaviour for
sigma_<any single number>
, or for sigma_<any single character>
, or sigma_<anything>
, or somthing else?– Phelype Oleinik
3 hours ago
@PhelypeOleinik Question updated.
– user49915
2 hours ago
@PhelypeOleinik Question updated.
– user49915
2 hours ago
add a comment |
2 Answers
2
active
oldest
votes
The following definition does it:
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
I save the definition of sigma
in __userxlixk_actual_sigma:
then redefine sigma
to check:
if it is followed by a
c_math_subscript_token
: if it is not, then just print__userxlixk_actual_sigma:
otherwise;grab what follows the subscript token as argument and check if the argument consists of a single token: if it does, apply a
!
, otherwise print normally.
Here's the output before and after the redefinition (I used LuaTeX and lua-visual-debug
to show the negative kern):
Code:
documentclass[varwidth]{standalone}
usepackage{lua-visual-debug}
usepackage{luatexbase}
usepackage{unravel}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
$sigma_{abc} sigma_0 sigma_0$
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
$sigma_{abc} sigma_0 sigma_0$
end{document}
Note, however, that this code will work if you use sigma_a^b
but not if you use sigma^b_a
.
To make it work for bothsigma_a^b
andsigma^b_a
you could use ane
-type argument (“embellishments”).
– Henri Menke
2 hours ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
|
show 1 more comment
I'd use the e
argument type of xparse
.
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
usepackage{amssymb}
usepackage{unicode-math}
usepackage[babel=true,verbose=errors]{microtype}
setmainfont{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont{TeX Gyre Termes Math}
setmathfont{Asana Math}[
range={setminus},
]
setmathfont{XITSMath-Regular}[
Extension=.otf,
range={"2A3E},
BoldFont=XITSMath-Bold,
]
%mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
AtBeginDocument{%
letstandardsigmasigma
letsigmakernedsigma
}
NewDocumentCommand{kernedsigma}{e{_^}}{%
standardsigma
IfValueT{#1}{_{!#1}}%
IfValueT{#2}{^{#2}}%
}
begin{document}
[sigma_0 sigma_0^2 sigma^2_0]
[standardsigma_{!0} standardsigma_{!0}^2 standardsigma^2_{!0}]
end{document}
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.
– user49915
1 hour ago
@user49915 I don't know what subscripts you want to use next tosigma
. You probably should kern less than -3mu generally.
– egreg
1 hour ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
add a comment |
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2 Answers
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active
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2 Answers
2
active
oldest
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active
oldest
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active
oldest
votes
The following definition does it:
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
I save the definition of sigma
in __userxlixk_actual_sigma:
then redefine sigma
to check:
if it is followed by a
c_math_subscript_token
: if it is not, then just print__userxlixk_actual_sigma:
otherwise;grab what follows the subscript token as argument and check if the argument consists of a single token: if it does, apply a
!
, otherwise print normally.
Here's the output before and after the redefinition (I used LuaTeX and lua-visual-debug
to show the negative kern):
Code:
documentclass[varwidth]{standalone}
usepackage{lua-visual-debug}
usepackage{luatexbase}
usepackage{unravel}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
$sigma_{abc} sigma_0 sigma_0$
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
$sigma_{abc} sigma_0 sigma_0$
end{document}
Note, however, that this code will work if you use sigma_a^b
but not if you use sigma^b_a
.
To make it work for bothsigma_a^b
andsigma^b_a
you could use ane
-type argument (“embellishments”).
– Henri Menke
2 hours ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
|
show 1 more comment
The following definition does it:
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
I save the definition of sigma
in __userxlixk_actual_sigma:
then redefine sigma
to check:
if it is followed by a
c_math_subscript_token
: if it is not, then just print__userxlixk_actual_sigma:
otherwise;grab what follows the subscript token as argument and check if the argument consists of a single token: if it does, apply a
!
, otherwise print normally.
Here's the output before and after the redefinition (I used LuaTeX and lua-visual-debug
to show the negative kern):
Code:
documentclass[varwidth]{standalone}
usepackage{lua-visual-debug}
usepackage{luatexbase}
usepackage{unravel}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
$sigma_{abc} sigma_0 sigma_0$
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
$sigma_{abc} sigma_0 sigma_0$
end{document}
Note, however, that this code will work if you use sigma_a^b
but not if you use sigma^b_a
.
To make it work for bothsigma_a^b
andsigma^b_a
you could use ane
-type argument (“embellishments”).
– Henri Menke
2 hours ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
|
show 1 more comment
The following definition does it:
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
I save the definition of sigma
in __userxlixk_actual_sigma:
then redefine sigma
to check:
if it is followed by a
c_math_subscript_token
: if it is not, then just print__userxlixk_actual_sigma:
otherwise;grab what follows the subscript token as argument and check if the argument consists of a single token: if it does, apply a
!
, otherwise print normally.
Here's the output before and after the redefinition (I used LuaTeX and lua-visual-debug
to show the negative kern):
Code:
documentclass[varwidth]{standalone}
usepackage{lua-visual-debug}
usepackage{luatexbase}
usepackage{unravel}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
$sigma_{abc} sigma_0 sigma_0$
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
$sigma_{abc} sigma_0 sigma_0$
end{document}
Note, however, that this code will work if you use sigma_a^b
but not if you use sigma^b_a
.
The following definition does it:
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
I save the definition of sigma
in __userxlixk_actual_sigma:
then redefine sigma
to check:
if it is followed by a
c_math_subscript_token
: if it is not, then just print__userxlixk_actual_sigma:
otherwise;grab what follows the subscript token as argument and check if the argument consists of a single token: if it does, apply a
!
, otherwise print normally.
Here's the output before and after the redefinition (I used LuaTeX and lua-visual-debug
to show the negative kern):
Code:
documentclass[varwidth]{standalone}
usepackage{lua-visual-debug}
usepackage{luatexbase}
usepackage{unravel}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
usepackage{amssymb}
usepackage{unicode-math}
setmainfont[Ligatures=TeX]{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
setmathfont[Ligatures=TeX,range={setminus}]{Asana Math}
setmathfont[Ligatures=TeX,Extension=.otf,range={"2A3E},BoldFont=XITSMath-Bold]{XITSMath-Regular}%%% The fat semicolon
usepackage[babel=true,verbose=errors]{microtype}
begin{document}
$sigma_{abc} sigma_0 sigma_0$
ExplSyntaxOn
cs_new_eq:NN __userxlixk_actual_sigma: sigma
RenewDocumentCommandsigma{}
{ __userxlixk_sigma: }
cs_new_protected:Npn __userxlixk_sigma:
{
peek_catcode_remove:NTF c_math_subscript_token
{ __userxlixk_sigma_check_group:n }
{ __userxlixk_actual_sigma: }
}
cs_new_protected:Npn __userxlixk_sigma_check_group:n #1
{
tl_if_single_token:nTF {#1}
{ __userxlixk_actual_sigma: c_math_subscript_token { ! #1 } }
{ __userxlixk_actual_sigma: c_math_subscript_token {#1} }
}
ExplSyntaxOff
$sigma_{abc} sigma_0 sigma_0$
end{document}
Note, however, that this code will work if you use sigma_a^b
but not if you use sigma^b_a
.
answered 2 hours ago
Phelype OleinikPhelype Oleinik
25k54690
25k54690
To make it work for bothsigma_a^b
andsigma^b_a
you could use ane
-type argument (“embellishments”).
– Henri Menke
2 hours ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
|
show 1 more comment
To make it work for bothsigma_a^b
andsigma^b_a
you could use ane
-type argument (“embellishments”).
– Henri Menke
2 hours ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
To make it work for both
sigma_a^b
and sigma^b_a
you could use an e
-type argument (“embellishments”).– Henri Menke
2 hours ago
To make it work for both
sigma_a^b
and sigma^b_a
you could use an e
-type argument (“embellishments”).– Henri Menke
2 hours ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric rather than checking that the whole subscript is single-token?
– user49915
1 hour ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@HenriMenke Thanks for the idea :-) I completely forgot about those. I didn't know, however, that the order in which the arguments were used didn't matter.
– Phelype Oleinik
24 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@user49915 If I understand correctly, you want to have a list of characters and the amount of kern to apply to each, is that it?
– Phelype Oleinik
22 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
@PhelypeOleinik Either the list you mention or a macro which works equivalently to having this list. The list doesn't have to be big, though; I've edited the question and specified the characters that I will use, and you may feel free to take them (or take some others if you wish).
– user49915
18 mins ago
|
show 1 more comment
I'd use the e
argument type of xparse
.
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
usepackage{amssymb}
usepackage{unicode-math}
usepackage[babel=true,verbose=errors]{microtype}
setmainfont{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont{TeX Gyre Termes Math}
setmathfont{Asana Math}[
range={setminus},
]
setmathfont{XITSMath-Regular}[
Extension=.otf,
range={"2A3E},
BoldFont=XITSMath-Bold,
]
%mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
AtBeginDocument{%
letstandardsigmasigma
letsigmakernedsigma
}
NewDocumentCommand{kernedsigma}{e{_^}}{%
standardsigma
IfValueT{#1}{_{!#1}}%
IfValueT{#2}{^{#2}}%
}
begin{document}
[sigma_0 sigma_0^2 sigma^2_0]
[standardsigma_{!0} standardsigma_{!0}^2 standardsigma^2_{!0}]
end{document}
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.
– user49915
1 hour ago
@user49915 I don't know what subscripts you want to use next tosigma
. You probably should kern less than -3mu generally.
– egreg
1 hour ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
add a comment |
I'd use the e
argument type of xparse
.
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
usepackage{amssymb}
usepackage{unicode-math}
usepackage[babel=true,verbose=errors]{microtype}
setmainfont{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont{TeX Gyre Termes Math}
setmathfont{Asana Math}[
range={setminus},
]
setmathfont{XITSMath-Regular}[
Extension=.otf,
range={"2A3E},
BoldFont=XITSMath-Bold,
]
%mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
AtBeginDocument{%
letstandardsigmasigma
letsigmakernedsigma
}
NewDocumentCommand{kernedsigma}{e{_^}}{%
standardsigma
IfValueT{#1}{_{!#1}}%
IfValueT{#2}{^{#2}}%
}
begin{document}
[sigma_0 sigma_0^2 sigma^2_0]
[standardsigma_{!0} standardsigma_{!0}^2 standardsigma^2_{!0}]
end{document}
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.
– user49915
1 hour ago
@user49915 I don't know what subscripts you want to use next tosigma
. You probably should kern less than -3mu generally.
– egreg
1 hour ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
add a comment |
I'd use the e
argument type of xparse
.
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
usepackage{amssymb}
usepackage{unicode-math}
usepackage[babel=true,verbose=errors]{microtype}
setmainfont{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont{TeX Gyre Termes Math}
setmathfont{Asana Math}[
range={setminus},
]
setmathfont{XITSMath-Regular}[
Extension=.otf,
range={"2A3E},
BoldFont=XITSMath-Bold,
]
%mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
AtBeginDocument{%
letstandardsigmasigma
letsigmakernedsigma
}
NewDocumentCommand{kernedsigma}{e{_^}}{%
standardsigma
IfValueT{#1}{_{!#1}}%
IfValueT{#2}{^{#2}}%
}
begin{document}
[sigma_0 sigma_0^2 sigma^2_0]
[standardsigma_{!0} standardsigma_{!0}^2 standardsigma^2_{!0}]
end{document}
I'd use the e
argument type of xparse
.
documentclass{book}
usepackage{fontspec}
usepackage[american,british,french,norsk,german,ngerman]{babel}
usepackage{mathtools}
usepackage{amssymb}
usepackage{unicode-math}
usepackage[babel=true,verbose=errors]{microtype}
setmainfont{TeX Gyre Termes}
setsansfont{TeX Gyre Heros}[Scale=0.88]
setmonofont{TeX Gyre Cursor}
setmathfont{TeX Gyre Termes Math}
setmathfont{Asana Math}[
range={setminus},
]
setmathfont{XITSMath-Regular}[
Extension=.otf,
range={"2A3E},
BoldFont=XITSMath-Bold,
]
%mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496/
AtBeginDocument{%
letstandardsigmasigma
letsigmakernedsigma
}
NewDocumentCommand{kernedsigma}{e{_^}}{%
standardsigma
IfValueT{#1}{_{!#1}}%
IfValueT{#2}{^{#2}}%
}
begin{document}
[sigma_0 sigma_0^2 sigma^2_0]
[standardsigma_{!0} standardsigma_{!0}^2 standardsigma^2_{!0}]
end{document}
answered 1 hour ago
egregegreg
733k8919313254
733k8919313254
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.
– user49915
1 hour ago
@user49915 I don't know what subscripts you want to use next tosigma
. You probably should kern less than -3mu generally.
– egreg
1 hour ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
add a comment |
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.
– user49915
1 hour ago
@user49915 I don't know what subscripts you want to use next tosigma
. You probably should kern less than -3mu generally.
– egreg
1 hour ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
First, thanks! Second, could you adapt your code slightly such that it checks that the first subscript letter (or all subscript letters, it doesn't matter as of now) is small alphanumeric? We don't really know whether it would produce a pleasant kerning for all other possible subscripts, would we?
– user49915
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
@user49915 I'm not sure what could be the difference. One can quite easily exclude some symbols from being kerned.
– egreg
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.
sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.– user49915
1 hour ago
I'm afraid that some sub/superscripts might need a little bit different kerning, e.g.
sigma_{top}
. There is no overlap, of course, but I'm feeling slightly uneasy about allowing for all possible subscripts to be moved left by 3mu.– user49915
1 hour ago
@user49915 I don't know what subscripts you want to use next to
sigma
. You probably should kern less than -3mu generally.– egreg
1 hour ago
@user49915 I don't know what subscripts you want to use next to
sigma
. You probably should kern less than -3mu generally.– egreg
1 hour ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
Initially: all the digits, i, j, k, k, n, i + 1, i - 1.
– user49915
57 mins ago
add a comment |
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Do you want to change the behaviour for
sigma_<any single number>
, or forsigma_<any single character>
, orsigma_<anything>
, or somthing else?– Phelype Oleinik
3 hours ago
@PhelypeOleinik Question updated.
– user49915
2 hours ago