* lisp/eshell/em-cmpl.el: Use completion-at-point i.s.o pcomplete

(eshell-cmpl-initialize): Refrain from binding to the `tab` key,
which prevents the tab -> TAB remapping.
Use completion-at-point and completion-help-at-point.
(eshell-complete-commands-list): Use `fboundp` test instead of ugly
gymnastics to try and hide the function call from the compiler.
(eshell-pcomplete): Make it an alias of completion-at-point.

* doc/misc/eshell.texi (Completion): Change wording to reflect
different default behavior.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index f955308ebe5..6b132eb41d7 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -985,6 +985,11 @@ default, and not just the opening element.
 
 ** Eshell
 
+*** TAB completion uses the standard completion-at-point rather than pcomplete
+Its UI is slightly different but can be customized to behave similarly,
+e.g. Pcomplete's default cycling can be obtained with
+(setq completion-cycle-threshold 5).
+
 ---
 *** Expansion of history event designators is disabled by default.
 To restore the old behavior, use