Re: Elegance in XPL sought

[cld@xxxxxxxx]

From: Harry Binswanger 
> Often I need to put a  at the top of a file, for instance to make sure
> the first line generates a hit in searches that look for an initial .
> And I don't want to double up on  if there's one in there already. So I
> check in this pedestrian way--is there a more elegant way?

The following is pithy; it takes advantage of the fact that  is the only 2-byte character (Cr+Lf, i.e., Ascii 13+10):

XPLeNCODE v2.0
b-gin [UNTITLED]
[XP_][TF_][CR_]{<}IF{<}CP{>}<>2{>}[TF_][255+048+068]{<}EI{>}{
<}EX{>}[cr|lf][cr|lf]
-nd
XPLeNCODE

Either way, an initial func XP is needed, to toggle eXPanded view, in case there is invisible embedded formatting (e.g.,  or ) at the top of the file; otherwise, the  may be inserted after the embedded statement instead of at the very top. There are other ways around this, but they are not 100% reliable; func XP is.

Your code works, but unnecessarily uses two S/Gs. Simplify:

XPLeNCODE v2.0
b-gin [UNTITLED]
[XP_][TF_][DF_][CR_][DF_]{<}SV01{>}[XD_];*;[cr|lf]{<}IF{<}IS0
1{>}<>"[cr|lf]"{>}[TF_][255+048+068]{<}EI{>};*;[cr|lf]{<}EX{>
}[cr|lf][cr|lf]
-nd
XPLeNCODE


--
Carl Distefano
cld@xxxxxxxx