[NTG-context] How do I handle strings with " characters in it in METAPOST?

[Gerben Wierda]

> On 29 Mar 2020, at 12:58, Wolfgang Schuster <wolfgang.schuster.lists at gmail.com> wrote:
> 
> Gerben Wierda schrieb am 29.03.2020 um 12:52:
>> I am using MetaFun (Lua code) to create METAPOST commands from an XML file. One of the issues I am running into that in METAPOST I have to handle strings with " characters in them and METAPOST doesn’t like those. The argument using the string
>> Foo "Bar” Foo
> 
>     ^^^
> 
> Use correct left quotation marks or \quotation{…}.

I’m not hard coding the string, I’m reading it from an XML. So, whatever I do, I need to do it by manipulating the string.

E.g. if the string I read contains

Foo "Bar” Foo

your suggestion means  I have to programmatically change that to

Foo \quotation{Bar} Foo

which is too complicated, given that I don’t have regular expression replace at my disposal.

I might be able to change al “ instances into something else by walking through the string and building a new one.

G