Add "version added" for getpgid

diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index ebc3c5c254bef0fb64818d119e3ffaf92273ca10..02f44ce045e575429bd9922445fc53b9fb23c3a4 100644 (file)
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -148,6 +148,7 @@ Availability: \UNIX.
 Return the process group id of the process with process id \var{pid}.
 If \var{pid} is 0, the process group id of the current process is
 returned. Availability: \UNIX.
+\versionadded{2.3}
 \end{funcdesc}
 
 \begin{funcdesc}{getpgrp}{}