`collect data` doesn't collect `after first line`

[muzimuzhi]

collect data collects both before line and after line, but only collects before first line and skips the symmetric after first line.

\begin{filecontents}[noheader,force]{data.csv}
a1,b1
a2,b2
a3,b3
\end{filecontents}

\documentclass{article}
\usepackage{csvsimple-l3}

\begin{document}
\csvreader[
  no head,
  collect data,
  before line=<before line>,
  before first line=<before 1st line>,
  after line=<after line>\par,
  after first line=<after 1st line>\par
]{data.csv}{}{%
  <\csvcoli><\csvcolii>%
}

\ttfamily
Expected:\par
<before 1st line><a1><b1><after 1st line>\par
<before line><a2><b2><after line>\par
<before line><a3><b3><after line>\par
\medskip

% Note the "after first line" code was used by \csvreader, not collected
Actual:\par
\csvdatacollection
\end{document}

Proposal

diff --git a/tex/latex/csvsimple/csvsimple-l3.sty b/tex/latex/csvsimple/csvsimple-l3.sty
index 87e48bd..2f9a704 100644
--- a/tex/latex/csvsimple/csvsimple-l3.sty
+++ b/tex/latex/csvsimple/csvsimple-l3.sty
@@ -967,6 +967,7 @@
 \cs_new_protected_nopar:Npn \__csvsim_collect_data:
   {
     \__csvsim_gset_tl_to_collect:N \g__csvsim_hook_after_head_tl
+    \__csvsim_gset_tl_to_collect:N \g__csvsim_hook_after_first_line_tl
     \__csvsim_gset_tl_to_collect:N \g__csvsim_hook_after_line_tl
     \__csvsim_gset_tl_to_collect:N \g__csvsim_hook_before_first_line_tl
     \__csvsim_gset_tl_to_collect:N \g__csvsim_hook_before_line_tl

[T-F-S]

Thank you for reporting this. Currently, I am very busy, but I will look into the matter in a few days.

[T-F-S]

I will correct this bug with the next version. Thank you.

[T-F-S]

Done with https://github.com/T-F-S/csvsimple/releases/tag/v2.5.0