Add Append Version of matchFromBody Replacement Text Function

[EnigmaSolved]

Currently we have %header.set.matchFromBody(hdr,regex,"replacement text")% which allows us to set replacement text on something if we find the regex expression match (which might be different text).

I would like an .append version of that, as in:
%header.append.matchFromBody(hdr,regex,"text to append")%

I mention here a use case for this.

Thanks for considering my request! :)

[RealRaven2000]

Sounds reasonable.

I will mull it over during the weekend. Basically it just means to extend all header.append functions with the matchFromBody keyword. Apparently it is already a legal token; I don't currently recall if I prepared that for implementing it later or is it already implemented (undocumented) and is only missing the "replaceArgument" parameter? (third param is expected to be matchGroup)

[RealRaven2000]

The syntax below seems to work for me already:

%header.append.matchFromBody(subject,"Fred Flintstones","Firestones")%

there is also a prefix variant. and also 3 more variations with matchFromSubject since they are fairly ubiquitous:

  "header.set.matchFromSubject", 
  "header.append.matchFromSubject", 
  "header.prefix.matchFromSubject",
  "header.set.matchFromBody", 
  "header.append.matchFromBody", 
  "header.prefix.matchFromBody"

my guess is they all support the replacement / alternative value parameter.