LaTeX: textcolor-environment handling suddenly changed

Robert T. shared this problem 4 years ago

Solved

Until yesterday I could use the textcolor-command to switch back into math-environment within a text-environment:

\text{This is my formula\mbox{:} \textcolor{black}{x^2+y^2=z^2}, which is just an example.}

The formula x^2+y^2=z^2 was formatted in math-style until yesterday. Suddenly the textcolor-environment is no longer interpreted as math-environment, it behaves like the surrounding text-environment.

The result is that all the LaTeX-texts in my applets are pretty destroyed now... Of course I can change that with some effort, but I wonder which handling is correct:

a) textcolor does NOT change the parent-environment (new version)

b) textcolor should switch into math-environment (behaviour until yesterday)

The same problem

Comments (8)

Simona Riva ● 4 years ago

There have been changes in LaTeX lately that might have triggered your issue.

I'm looping your post to the Developers, thank you

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Robert T. ● 4 years ago

Thank you for your reply! While repairing my texts I found another change in LaTeX: it concerns the space between a colon (:) and text. Usually an additional space was inserted between a letter and a colon, but now this space is no longer inserted (actually this would make things easier, because I always had to reduce this space by using \mbox{:} ).

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Michael Borcherds ● 4 years ago

Please can you post links to your affected applets?

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Robert T. ● 4 years ago

I tried to change most of my applets today, so most of the LaTex-texts are alomst repaired - I had to change several spaces, braces, text-environments, etc.

I uploaded an applet with LaTeX-text only where I tried to explain the new behaviour:

https://www.geogebra.org/m/c3yenfru

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Robert T. ● 4 years ago

I found two of my applets which are still suffering the loss of spaces which in math-environment would be inserted automatically - I could repair this by using the javascript command replace and regexp syntax.

https://www.geogebra.org/m/knPUKkfD

Here all the vectors are formatted in textstyle, since last night.

https://www.geogebra.org/m/ycjze2xw

Here you have click through the explanation until the texts with the vector equations are shown. Once there were spaces before and after the + and - signs :( Now the vector equations look very compressed.

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Michael Borcherds ● 4 years ago

Thanks for the nice investigations :)

I think \textcolor{} going into math mode was a bug.

We'll try and fix the spacing problem with A \cap B \text{ A \cap B} soon!

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Michael Borcherds ● 4 years ago

Please try the new version (v501)

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Robert T. ● 4 years ago

Thank you for reanimating the lost spaces!

In case someone is interested: In the meantime I found out that switching to math-mode within text-environment can be done by enclosing the math-formula with \[ and \]:

\text{This is a formula: \[c^2=a^2+b^2\], copyright by Pythagoras.}

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