From 8e5c53af831bd180af0c59f2d96c67ab9da59590 Mon Sep 17 00:00:00 2001
From: Piotr Pawel Stefaniak <pstef@FreeBSD.org>
Date: Sun, 30 Apr 2023 18:31:52 +0200
Subject: [PATCH] sh: also auto-complete functions

Differential Revision:	https://reviews.freebsd.org/D40619
---
 bin/sh/histedit.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/bin/sh/histedit.c b/bin/sh/histedit.c
index 0d40e1c9ec1a..842c166159bc 100644
--- a/bin/sh/histedit.c
+++ b/bin/sh/histedit.c
@@ -51,6 +51,7 @@ static char sccsid[] = "@(#)histedit.c	8.2 (Berkeley) 5/4/95";
  * Editline and history functions (and glue).
  */
 #include "alias.h"
+#include "exec.h"
 #include "shell.h"
 #include "parser.h"
 #include "var.h"
@@ -621,6 +622,7 @@ static char
 	char **matches = NULL, **rmatches;
 	size_t i = 0, size = 16, uniq;
 	size_t curpos = end - start, lcstring = -1;
+	struct cmdentry e;
 
 	in_command_completion = false;
 	if (start > 0 || memchr("/.~", text[0], 3) != NULL)
@@ -680,6 +682,16 @@ static char
 			goto out;
 		matches = rmatches;
 	}
+	for (const void *a = NULL; (a = itercmd(a, &e)) != NULL;) {
+		if (e.cmdtype != CMDFUNCTION)
+			continue;
+		if (strncmp(e.cmdname, text, curpos) != 0)
+			continue;
+		rmatches = add_match(matches, ++i, &size, strdup(e.cmdname));
+		if (rmatches == NULL)
+			goto out;
+		matches = rmatches;
+	}
 out:
 	free(free_path);
 	if (i == 0) {