From 06ec2a1388384b5ad5e821c8846df4ec65af50e2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Janouch?= <p.janouch@gmail.com>
Date: Wed, 6 May 2015 17:32:29 +0200
Subject: [PATCH] degesch: stub word completion

---
 degesch.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/degesch.c b/degesch.c
index 3742baa..851971c 100644
--- a/degesch.c
+++ b/degesch.c
@@ -215,6 +215,7 @@ input_erase (struct input *self)
 
 static int app_readline_init (void);
 static void on_readline_input (char *line);
+static char **app_readline_completion (const char *text, int start, int end);
 
 static void
 input_start (struct input *self, const char *program_name)
@@ -225,9 +226,11 @@ input_start (struct input *self, const char *program_name)
 	// This can cause memory leaks, or maybe even a segfault.  Funny, eh?
 	stifle_history (HISTORY_LIMIT);
 
+	rl_readline_name = PROGRAM_NAME;
 	rl_startup_hook = app_readline_init;
 	rl_catch_sigwinch = false;
 	rl_callback_handler_install (self->prompt, on_readline_input);
+	rl_attempted_completion_function = app_readline_completion;
 	self->prompt_shown = 1;
 	self->active = true;
 }
@@ -5113,6 +5116,18 @@ app_readline_bind_meta (char key, rl_command_func_t cb)
 #endif
 }
 
+static char **
+app_readline_completion (const char *text, int start, int end)
+{
+	(void) text;
+	(void) start;
+	(void) end;
+
+	// Don't iterate over filenames and stuff
+	rl_attempted_completion_over = true;
+	return NULL;
+}
+
 static int
 app_readline_init (void)
 {
@@ -5134,6 +5149,12 @@ app_readline_init (void)
 
 	// We need to hide the prompt first
 	rl_bind_key (RETURN, on_readline_return);
+
+	// Completion
+	rl_variable_bind ("completion-ignore-case", "on");
+	rl_bind_key (TAB, rl_named_function ("menu-complete"));
+	if (key_btab)
+		rl_bind_keyseq (key_btab, rl_named_function ("menu-complete-backward"));
 	return 0;
 }
 
@@ -5187,6 +5208,15 @@ on_editline_next_buffer (EditLine *editline, int key)
 	return CC_NORM;
 }
 
+static unsigned char
+on_editline_complete (EditLine *editline, int key)
+{
+	(void) key;
+	(void) editline;
+
+	return CC_ERROR;
+}
+
 static unsigned char
 on_editline_return (EditLine *editline, int key)
 {
@@ -5252,6 +5282,10 @@ app_editline_init (struct input *self)
 	el_set (self->editline, EL_ADDFN, "send-line",
 		"Send line", on_editline_return);
 	el_set (self->editline, EL_BIND, "\n", "send-line", NULL);
+
+	el_set (self->editline, EL_ADDFN, "complete",
+		"Complete word", on_editline_complete);
+	el_set (self->editline, EL_BIND, "^I", "complete", NULL);
 }
 
 #endif // HAVE_EDITLINE