Colouring aligned math text with macros












0














I would like to have coloured text-generating macros that i can use inside an align* environment. However, the two seem conflicting.



Here's a MWE describing the issue.



documentclass{article}



usepackage{amsmath}

usepackage[usenames,dvipsnames]{xcolor}





newcommand{src}[1]{ensuremath{color{RoyalBlue}{#1}}}

newcommand{letin}[3]{let~#1=#2~in~#3}

newcommand{letinsrc}[3]{src{let}~#1=#2~src{in}~#3}



begin{document}

This is on a single line and it works

begin{align*}

    src{letin{x}{3}{x}}

end{align*}



Here i want to break the text over multiple lines and it does not work

% begin{align*}

%   &

%   src{

%       letin{x}{3}{

%       \&

%       x}

%   }

% end{align*}



This is how it should look like, but the issue is the extra usage of ``src'' inside the macro.

begin{align*}

    &

    letinsrc{x}{src{3}}{

    \

    & 

    src{x}

    }

end{align*}



end{document}


Intuitively, i would just like a macro for setting the colour, no matter where, and a macro for the letin construct.
The problem is that the workaround is not modular, it is ... well, a workaround and not a solution.
If i have more colours, i must define multiple versions of letinsrc and i must wrap each of the arguments in their own src.
That leads to tons of nested src while i would just like a single src at the beginning of the align*.



Also, in the letinsrc command, i cannot wrap the arguments in src, as there will be the line breaks and alignments ampersands and that won't compile.



Thanks!






color align amsmath







share|improve this question


















  • 1




    You cannot have a group {...} spread across & within align (or array, or tabular, or ...). That's what you're trying to do with your macro src in the second instance where it doesn't work: src{ ... & ... }. You'll have to break this up into segments like src{ ... } & src{ ... } or use another method of alignment.
    – Werner
    2 hours ago










  • @Werner ouch. But perhaps there is some other way, e.g., saying "change text to red from now on" before the align (or better, within the align), and then "change text to black from now on" when one is done with it?
    – Squera
    1 hour ago






  • 2




    Within align each "cell" (between &) forms a group with limited scope. That's just the way it is. Yes, you can place the colour change outside align, but that would affect the entire align.
    – Werner
    1 hour ago


















0














I would like to have coloured text-generating macros that i can use inside an align* environment. However, the two seem conflicting.



Here's a MWE describing the issue.



documentclass{article}



usepackage{amsmath}

usepackage[usenames,dvipsnames]{xcolor}





newcommand{src}[1]{ensuremath{color{RoyalBlue}{#1}}}

newcommand{letin}[3]{let~#1=#2~in~#3}

newcommand{letinsrc}[3]{src{let}~#1=#2~src{in}~#3}



begin{document}

This is on a single line and it works

begin{align*}

    src{letin{x}{3}{x}}

end{align*}



Here i want to break the text over multiple lines and it does not work

% begin{align*}

%   &

%   src{

%       letin{x}{3}{

%       \&

%       x}

%   }

% end{align*}



This is how it should look like, but the issue is the extra usage of ``src'' inside the macro.

begin{align*}

    &

    letinsrc{x}{src{3}}{

    \

    & 

    src{x}

    }

end{align*}



end{document}


Intuitively, i would just like a macro for setting the colour, no matter where, and a macro for the letin construct.
The problem is that the workaround is not modular, it is ... well, a workaround and not a solution.
If i have more colours, i must define multiple versions of letinsrc and i must wrap each of the arguments in their own src.
That leads to tons of nested src while i would just like a single src at the beginning of the align*.



Also, in the letinsrc command, i cannot wrap the arguments in src, as there will be the line breaks and alignments ampersands and that won't compile.



Thanks!






color align amsmath







share|improve this question


















  • 1




    You cannot have a group {...} spread across & within align (or array, or tabular, or ...). That's what you're trying to do with your macro src in the second instance where it doesn't work: src{ ... & ... }. You'll have to break this up into segments like src{ ... } & src{ ... } or use another method of alignment.
    – Werner
    2 hours ago










  • @Werner ouch. But perhaps there is some other way, e.g., saying "change text to red from now on" before the align (or better, within the align), and then "change text to black from now on" when one is done with it?
    – Squera
    1 hour ago






  • 2




    Within align each "cell" (between &) forms a group with limited scope. That's just the way it is. Yes, you can place the colour change outside align, but that would affect the entire align.
    – Werner
    1 hour ago
















0












0








0







I would like to have coloured text-generating macros that i can use inside an align* environment. However, the two seem conflicting.



Here's a MWE describing the issue.



documentclass{article}



usepackage{amsmath}

usepackage[usenames,dvipsnames]{xcolor}





newcommand{src}[1]{ensuremath{color{RoyalBlue}{#1}}}

newcommand{letin}[3]{let~#1=#2~in~#3}

newcommand{letinsrc}[3]{src{let}~#1=#2~src{in}~#3}



begin{document}

This is on a single line and it works

begin{align*}

    src{letin{x}{3}{x}}

end{align*}



Here i want to break the text over multiple lines and it does not work

% begin{align*}

%   &

%   src{

%       letin{x}{3}{

%       \&

%       x}

%   }

% end{align*}



This is how it should look like, but the issue is the extra usage of ``src'' inside the macro.

begin{align*}

    &

    letinsrc{x}{src{3}}{

    \

    & 

    src{x}

    }

end{align*}



end{document}


Intuitively, i would just like a macro for setting the colour, no matter where, and a macro for the letin construct.
The problem is that the workaround is not modular, it is ... well, a workaround and not a solution.
If i have more colours, i must define multiple versions of letinsrc and i must wrap each of the arguments in their own src.
That leads to tons of nested src while i would just like a single src at the beginning of the align*.



Also, in the letinsrc command, i cannot wrap the arguments in src, as there will be the line breaks and alignments ampersands and that won't compile.



Thanks!






color align amsmath







share|improve this question













I would like to have coloured text-generating macros that i can use inside an align* environment. However, the two seem conflicting.



Here's a MWE describing the issue.



documentclass{article}



usepackage{amsmath}

usepackage[usenames,dvipsnames]{xcolor}





newcommand{src}[1]{ensuremath{color{RoyalBlue}{#1}}}

newcommand{letin}[3]{let~#1=#2~in~#3}

newcommand{letinsrc}[3]{src{let}~#1=#2~src{in}~#3}



begin{document}

This is on a single line and it works

begin{align*}

    src{letin{x}{3}{x}}

end{align*}



Here i want to break the text over multiple lines and it does not work

% begin{align*}

%   &

%   src{

%       letin{x}{3}{

%       \&

%       x}

%   }

% end{align*}



This is how it should look like, but the issue is the extra usage of ``src'' inside the macro.

begin{align*}

    &

    letinsrc{x}{src{3}}{

    \

    & 

    src{x}

    }

end{align*}



end{document}


Intuitively, i would just like a macro for setting the colour, no matter where, and a macro for the letin construct.
The problem is that the workaround is not modular, it is ... well, a workaround and not a solution.
If i have more colours, i must define multiple versions of letinsrc and i must wrap each of the arguments in their own src.
That leads to tons of nested src while i would just like a single src at the beginning of the align*.



Also, in the letinsrc command, i cannot wrap the arguments in src, as there will be the line breaks and alignments ampersands and that won't compile.



Thanks!






color align amsmath




color align amsmath






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 2 hours ago









Squera

1787




1787








  • 1




    You cannot have a group {...} spread across & within align (or array, or tabular, or ...). That's what you're trying to do with your macro src in the second instance where it doesn't work: src{ ... & ... }. You'll have to break this up into segments like src{ ... } & src{ ... } or use another method of alignment.
    – Werner
    2 hours ago










  • @Werner ouch. But perhaps there is some other way, e.g., saying "change text to red from now on" before the align (or better, within the align), and then "change text to black from now on" when one is done with it?
    – Squera
    1 hour ago






  • 2




    Within align each "cell" (between &) forms a group with limited scope. That's just the way it is. Yes, you can place the colour change outside align, but that would affect the entire align.
    – Werner
    1 hour ago
















  • 1




    You cannot have a group {...} spread across & within align (or array, or tabular, or ...). That's what you're trying to do with your macro src in the second instance where it doesn't work: src{ ... & ... }. You'll have to break this up into segments like src{ ... } & src{ ... } or use another method of alignment.
    – Werner
    2 hours ago










  • @Werner ouch. But perhaps there is some other way, e.g., saying "change text to red from now on" before the align (or better, within the align), and then "change text to black from now on" when one is done with it?
    – Squera
    1 hour ago






  • 2




    Within align each "cell" (between &) forms a group with limited scope. That's just the way it is. Yes, you can place the colour change outside align, but that would affect the entire align.
    – Werner
    1 hour ago










1




1




You cannot have a group {...} spread across & within align (or array, or tabular, or ...). That's what you're trying to do with your macro src in the second instance where it doesn't work: src{ ... & ... }. You'll have to break this up into segments like src{ ... } & src{ ... } or use another method of alignment.
– Werner
2 hours ago




You cannot have a group {...} spread across & within align (or array, or tabular, or ...). That's what you're trying to do with your macro src in the second instance where it doesn't work: src{ ... & ... }. You'll have to break this up into segments like src{ ... } & src{ ... } or use another method of alignment.
– Werner
2 hours ago












@Werner ouch. But perhaps there is some other way, e.g., saying "change text to red from now on" before the align (or better, within the align), and then "change text to black from now on" when one is done with it?
– Squera
1 hour ago




@Werner ouch. But perhaps there is some other way, e.g., saying "change text to red from now on" before the align (or better, within the align), and then "change text to black from now on" when one is done with it?
– Squera
1 hour ago




2




2




Within align each "cell" (between &) forms a group with limited scope. That's just the way it is. Yes, you can place the colour change outside align, but that would affect the entire align.
– Werner
1 hour ago






Within align each "cell" (between &) forms a group with limited scope. That's just the way it is. Yes, you can place the colour change outside align, but that would affect the entire align.
– Werner
1 hour ago












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