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Why the various definitions of the thin space ,?
Why is there a , space at the beginning of the “aligned” environment?Styling definitionsWhy is `strut` working in these scenarios?Necessity of nested text within math mode for proper mathchoice-based scalingHow can I insert a thin space (,) in a listing?Turn * into thin space for clearer math spacingAlways safe to use empty braces `` to guard space?unbreakable (thin) space inside « », for tex4htThin space between minus sign and numberHow to reduce the space between two definitions?
Knuths definition of , is mskipthinmuskip.
LaTeX changes this definition to
DeclareRobustCommand,%
relaxifmmodemskipthinmuskipelsethinspacefi
defthinspacekern .16667em
amsmath.sty says it's
DeclareRobustCommandtmspace[3]%
ifmmodemskip#1#2elsekern#1#3firelax
renewcommand,tmspace+thinmuskip.1667em
I might understand LaTeX's point to make a command usable also in text mode. But what's the point of the redefinition by amsmath?
spacing amsmath
edited 4 hours ago
Sebastiano
11.1k42164
asked 5 hours ago
user49915user49915
617121
add a comment |
Knuths definition of , is mskipthinmuskip.
LaTeX changes this definition to
DeclareRobustCommand,%
relaxifmmodemskipthinmuskipelsethinspacefi
defthinspacekern .16667em
amsmath.sty says it's
DeclareRobustCommandtmspace[3]%
ifmmodemskip#1#2elsekern#1#3firelax
renewcommand,tmspace+thinmuskip.1667em
I might understand LaTeX's point to make a command usable also in text mode. But what's the point of the redefinition by amsmath?
spacing amsmath
edited 4 hours ago
Sebastiano
11.1k42164
asked 5 hours ago
user49915user49915
617121
add a comment |
Knuths definition of , is mskipthinmuskip.
LaTeX changes this definition to
DeclareRobustCommand,%
relaxifmmodemskipthinmuskipelsethinspacefi
defthinspacekern .16667em
amsmath.sty says it's
DeclareRobustCommandtmspace[3]%
ifmmodemskip#1#2elsekern#1#3firelax
renewcommand,tmspace+thinmuskip.1667em
I might understand LaTeX's point to make a command usable also in text mode. But what's the point of the redefinition by amsmath?
spacing amsmath
edited 4 hours ago
Sebastiano
11.1k42164
asked 5 hours ago
user49915user49915
617121
Knuths definition of , is mskipthinmuskip.
LaTeX changes this definition to
DeclareRobustCommand,%
relaxifmmodemskipthinmuskipelsethinspacefi
defthinspacekern .16667em
amsmath.sty says it's
DeclareRobustCommandtmspace[3]%
ifmmodemskip#1#2elsekern#1#3firelax
renewcommand,tmspace+thinmuskip.1667em
I might understand LaTeX's point to make a command usable also in text mode. But what's the point of the redefinition by amsmath?
spacing amsmath
spacing amsmath
edited 4 hours ago
Sebastiano
11.1k42164
asked 5 hours ago
user49915user49915
617121
edited 4 hours ago
Sebastiano
11.1k42164
asked 5 hours ago
user49915user49915
617121
edited 4 hours ago
Sebastiano
11.1k42164
edited 4 hours ago
Sebastiano
11.1k42164
edited 4 hours ago
Sebastiano
11.1k42164
11.1k42164
asked 5 hours ago
user49915user49915
617121
asked 5 hours ago
user49915user49915
617121
asked 5 hours ago
user49915user49915
617121
617121
add a comment |
add a comment |
1 Answer
1
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oldest
votes
You should look at the full picture:
152 │ ifxleavevmode@ifvmode@undefined
153 │ DeclareRobustCommandtmspace[3]%
154 │ ifmmodemskip#1#2elsekern#1#3firelax
155 │ else
156 │ DeclareRobustCommandtmspace[3]%
157 │ ifmmodemskip#1#2elseleavevmode@ifvmodekern#1#3firelax
158 │ fi
159 │ renewcommand,tmspace+thinmuskip.1667em
160 │ letthinspace,
161 │ renewcommand!tmspace-thinmuskip.1667em
162 │ letnegthinspace!
163 │ renewcommand:tmspace+medmuskip.2222em
164 │ letmedspace:
165 │ newcommandnegmedspacetmspace-medmuskip.2222em
166 │ renewcommand;tmspace+thickmuskip.2777em
167 │ letthickspace;
168 │ newcommandnegthickspacetmspace-thickmuskip.2777em
The two definitions of tmspace are due to recent decisions to make such commands start paragraph mode anyway. With a recent LaTeX kernel the second one will be used.
Contrast this with the code in the LaTeX kernel:
1619 │ DeclareRobustCommand,%
1620 │ relaxifmmodemskipthinmuskipelsethinspacefi
1621 │
1630 │ defthinspaceleavevmode@ifvmodekern .16667em
1631 │ defnegthinspaceleavevmode@ifvmodekern-.16667em
4543 │ def>mskipmedmuskip
4544 │ def;mskipthickmuskip
4545 │ def!mskip-thinmuskip
4547 │ let:=>
The approach of amsmath is much more rational and cleaner. They also provide text mode equivalent of all macros, whereas ! cannot be used in text mode if amsmath is not loaded, and similarly for the others. The final result will be essentially the same. However, a , command will be translated into tmspace+thinmuskip.1667em when written in an auxiliary file, instead of ,. Not really a big deal.
answered 4 hours ago
egregegreg
728k8819233233
add a comment |
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You should look at the full picture:
152 │ ifxleavevmode@ifvmode@undefined
153 │ DeclareRobustCommandtmspace[3]%
154 │ ifmmodemskip#1#2elsekern#1#3firelax
155 │ else
156 │ DeclareRobustCommandtmspace[3]%
157 │ ifmmodemskip#1#2elseleavevmode@ifvmodekern#1#3firelax
158 │ fi
159 │ renewcommand,tmspace+thinmuskip.1667em
160 │ letthinspace,
161 │ renewcommand!tmspace-thinmuskip.1667em
162 │ letnegthinspace!
163 │ renewcommand:tmspace+medmuskip.2222em
164 │ letmedspace:
165 │ newcommandnegmedspacetmspace-medmuskip.2222em
166 │ renewcommand;tmspace+thickmuskip.2777em
167 │ letthickspace;
168 │ newcommandnegthickspacetmspace-thickmuskip.2777em
The two definitions of tmspace are due to recent decisions to make such commands start paragraph mode anyway. With a recent LaTeX kernel the second one will be used.
Contrast this with the code in the LaTeX kernel:
1619 │ DeclareRobustCommand,%
1620 │ relaxifmmodemskipthinmuskipelsethinspacefi
1621 │
1630 │ defthinspaceleavevmode@ifvmodekern .16667em
1631 │ defnegthinspaceleavevmode@ifvmodekern-.16667em
4543 │ def>mskipmedmuskip
4544 │ def;mskipthickmuskip
4545 │ def!mskip-thinmuskip
4547 │ let:=>
The approach of amsmath is much more rational and cleaner. They also provide text mode equivalent of all macros, whereas ! cannot be used in text mode if amsmath is not loaded, and similarly for the others. The final result will be essentially the same. However, a , command will be translated into tmspace+thinmuskip.1667em when written in an auxiliary file, instead of ,. Not really a big deal.
answered 4 hours ago
egregegreg
728k8819233233
add a comment |
You should look at the full picture:
152 │ ifxleavevmode@ifvmode@undefined
153 │ DeclareRobustCommandtmspace[3]%
154 │ ifmmodemskip#1#2elsekern#1#3firelax
155 │ else
156 │ DeclareRobustCommandtmspace[3]%
157 │ ifmmodemskip#1#2elseleavevmode@ifvmodekern#1#3firelax
158 │ fi
159 │ renewcommand,tmspace+thinmuskip.1667em
160 │ letthinspace,
161 │ renewcommand!tmspace-thinmuskip.1667em
162 │ letnegthinspace!
163 │ renewcommand:tmspace+medmuskip.2222em
164 │ letmedspace:
165 │ newcommandnegmedspacetmspace-medmuskip.2222em
166 │ renewcommand;tmspace+thickmuskip.2777em
167 │ letthickspace;
168 │ newcommandnegthickspacetmspace-thickmuskip.2777em
The two definitions of tmspace are due to recent decisions to make such commands start paragraph mode anyway. With a recent LaTeX kernel the second one will be used.
Contrast this with the code in the LaTeX kernel:
1619 │ DeclareRobustCommand,%
1620 │ relaxifmmodemskipthinmuskipelsethinspacefi
1621 │
1630 │ defthinspaceleavevmode@ifvmodekern .16667em
1631 │ defnegthinspaceleavevmode@ifvmodekern-.16667em
4543 │ def>mskipmedmuskip
4544 │ def;mskipthickmuskip
4545 │ def!mskip-thinmuskip
4547 │ let:=>
The approach of amsmath is much more rational and cleaner. They also provide text mode equivalent of all macros, whereas ! cannot be used in text mode if amsmath is not loaded, and similarly for the others. The final result will be essentially the same. However, a , command will be translated into tmspace+thinmuskip.1667em when written in an auxiliary file, instead of ,. Not really a big deal.
answered 4 hours ago
egregegreg
728k8819233233
add a comment |
You should look at the full picture:
152 │ ifxleavevmode@ifvmode@undefined
153 │ DeclareRobustCommandtmspace[3]%
154 │ ifmmodemskip#1#2elsekern#1#3firelax
155 │ else
156 │ DeclareRobustCommandtmspace[3]%
157 │ ifmmodemskip#1#2elseleavevmode@ifvmodekern#1#3firelax
158 │ fi
159 │ renewcommand,tmspace+thinmuskip.1667em
160 │ letthinspace,
161 │ renewcommand!tmspace-thinmuskip.1667em
162 │ letnegthinspace!
163 │ renewcommand:tmspace+medmuskip.2222em
164 │ letmedspace:
165 │ newcommandnegmedspacetmspace-medmuskip.2222em
166 │ renewcommand;tmspace+thickmuskip.2777em
167 │ letthickspace;
168 │ newcommandnegthickspacetmspace-thickmuskip.2777em
The two definitions of tmspace are due to recent decisions to make such commands start paragraph mode anyway. With a recent LaTeX kernel the second one will be used.
Contrast this with the code in the LaTeX kernel:
1619 │ DeclareRobustCommand,%
1620 │ relaxifmmodemskipthinmuskipelsethinspacefi
1621 │
1630 │ defthinspaceleavevmode@ifvmodekern .16667em
1631 │ defnegthinspaceleavevmode@ifvmodekern-.16667em
4543 │ def>mskipmedmuskip
4544 │ def;mskipthickmuskip
4545 │ def!mskip-thinmuskip
4547 │ let:=>
The approach of amsmath is much more rational and cleaner. They also provide text mode equivalent of all macros, whereas ! cannot be used in text mode if amsmath is not loaded, and similarly for the others. The final result will be essentially the same. However, a , command will be translated into tmspace+thinmuskip.1667em when written in an auxiliary file, instead of ,. Not really a big deal.
answered 4 hours ago
egregegreg
728k8819233233
You should look at the full picture:
152 │ ifxleavevmode@ifvmode@undefined
153 │ DeclareRobustCommandtmspace[3]%
154 │ ifmmodemskip#1#2elsekern#1#3firelax
155 │ else
156 │ DeclareRobustCommandtmspace[3]%
157 │ ifmmodemskip#1#2elseleavevmode@ifvmodekern#1#3firelax
158 │ fi
159 │ renewcommand,tmspace+thinmuskip.1667em
160 │ letthinspace,
161 │ renewcommand!tmspace-thinmuskip.1667em
162 │ letnegthinspace!
163 │ renewcommand:tmspace+medmuskip.2222em
164 │ letmedspace:
165 │ newcommandnegmedspacetmspace-medmuskip.2222em
166 │ renewcommand;tmspace+thickmuskip.2777em
167 │ letthickspace;
168 │ newcommandnegthickspacetmspace-thickmuskip.2777em
The two definitions of tmspace are due to recent decisions to make such commands start paragraph mode anyway. With a recent LaTeX kernel the second one will be used.
Contrast this with the code in the LaTeX kernel:
1619 │ DeclareRobustCommand,%
1620 │ relaxifmmodemskipthinmuskipelsethinspacefi
1621 │
1630 │ defthinspaceleavevmode@ifvmodekern .16667em
1631 │ defnegthinspaceleavevmode@ifvmodekern-.16667em
4543 │ def>mskipmedmuskip
4544 │ def;mskipthickmuskip
4545 │ def!mskip-thinmuskip
4547 │ let:=>
The approach of amsmath is much more rational and cleaner. They also provide text mode equivalent of all macros, whereas ! cannot be used in text mode if amsmath is not loaded, and similarly for the others. The final result will be essentially the same. However, a , command will be translated into tmspace+thinmuskip.1667em when written in an auxiliary file, instead of ,. Not really a big deal.
answered 4 hours ago
egregegreg
728k8819233233
answered 4 hours ago
egregegreg
728k8819233233
answered 4 hours ago
egregegreg
728k8819233233
answered 4 hours ago
egregegreg
728k8819233233
728k8819233233
add a comment |
add a comment |
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