Have the doc strings of `load-path' and `require' mention each other

* src/fns.c (Frequire): Mention `load-path' and fill the doc
string (bug#18829).

* src/lread.c (syms_of_lread): Mention that `require' uses
`load-path'.

(cherry picked from commit 3eca9a03816f95da0030665223c0b5262f223ba7)

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lread.c b/src/lread.c
index d374406e7b9..ef58b20070d 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -4508,6 +4508,7 @@ were read in.  */);
                doc: /* List of directories to search for files to load.
 Each element is a string (directory file name) or nil (meaning
 `default-directory').
+This list is consulted by the `require' function.
 Initialized during startup as described in Info node `(elisp)Library Search'.
 Use `directory-file-name' when adding items to this path.  However, Lisp
 programs that process this list should tolerate directories both with