borg-initialize: Prepend "info/" from builddir to Info-directory-list

When $INFOPATH is set, `info-initialize' ignores the list returned
by `Info-default-dirs'.  When running Emacs from the build directory,
that means that the contained "info/" directory is not included in
`Info-directory-list'.  Fix that by prepending the first element
returned by `Info-default-dirs'.  (`info-initialize' actually does
something similar, but only for "relocatable NS builds".)

Author: tarsius

CHANGELOG

@@ -1,4 +1,9 @@
 # -*- mode: org -*-
+* v4.4.1    UNRELEASED
+
+- When Emacs is run from its build directory, add the respective info
+  directory to ~Info-directory-list~.
+
 * v4.4.0    2026-01-01
 
 - Dropped support for Emacs 27.  64f67e5

borg.el

@@ -523,6 +523,9 @@ exists."
   (when noninteractive
     (borg--load-config "etc/borg/init.el"))
   (info-initialize)
+  (let ((dir (car (Info-default-dirs))))
+    (when (file-directory-p dir)
+      (cl-pushnew dir Info-directory-list :test #'file-equal-p)))
   (let ((start (current-time))
         (skipped 0)
         (initialized 0))