Re: [FR] ob-awk.el specifying a delimeter argument in for output

[Max Nikulin]

On 05/03/2023 16:50, Jeremie Juste wrote:
> #+begin_src awk :in-file test.csv :cmd-line -F ","
> {print $0}
> #+end_src

Notice that awk has Output Field Separator that is space by default and 
may be set using -v OFS=; (or --assign) command line options. -F option 
sets input field separator FS variable.

"print $0" just sends input record to output literally. If you try to 
modify some field then record is rebuilt taken into account OFS

    echo 1,2 | awk -F , '{ $1=$1+10; print; }'

    11 2

See (info "(awk) Changing Fields)")
https://www.gnu.org/software/gawk/manual/gawk.html#Changing-Fields
I just have found this link on stackoverflow. It is enough to add even 
$1=$1 that should not really modify field values.

So I expect less issues with a more realistic example.

As to ";" as CSV values separator, it often appears with "," as decimal 
separator 1234,56 and dd.mm.yyyy date formats. Unfortunately handling of 
localized data formats is not a strong side of Emacs. E.g. fixed 
LC_NUMERIC=C forces "." as decimal separator, date parsing functions are 
rather limited.