diff --git a/client.c b/client.c
index c608ec9d..32565184 100644
--- a/client.c
+++ b/client.c
@@ -646,7 +646,7 @@ client_read_open(void *data, size_t datalen)
 	struct msg_read_done	 reply;
 	struct client_file	 find, *cf;
 	const int		 flags = O_NONBLOCK|O_RDONLY;
-	int			 error = 0;
+	int			 error;
 
 	if (datalen < sizeof *msg)
 		fatalx("bad MSG_READ_OPEN size");
diff --git a/cmd-find.c b/cmd-find.c
index 154842ab..aa36bc35 100644
--- a/cmd-find.c
+++ b/cmd-find.c
@@ -1230,29 +1230,31 @@ no_pane:
 static struct client *
 cmd_find_current_client(struct cmdq_item *item, int quiet)
 {
-	struct client		*c;
+	struct client		*c = NULL, *found;
 	struct session		*s;
 	struct window_pane	*wp;
 	struct cmd_find_state	 fs;
 
-	if (item->client != NULL && item->client->session != NULL)
-		return (item->client);
+	if (item != NULL)
+		c = item->client;
+	if (c != NULL && c->session != NULL)
+		return (c);
 
-	c = NULL;
-	if ((wp = cmd_find_inside_pane(item->client)) != NULL) {
+	found = NULL;
+	if (c != NULL && (wp = cmd_find_inside_pane(c)) != NULL) {
 		cmd_find_clear_state(&fs, CMD_FIND_QUIET);
 		fs.w = wp->window;
 		if (cmd_find_best_session_with_window(&fs) == 0)
-			c = cmd_find_best_client(fs.s);
+			found = cmd_find_best_client(fs.s);
 	} else {
 		s = cmd_find_best_session(NULL, 0, CMD_FIND_QUIET);
 		if (s != NULL)
-			c = cmd_find_best_client(s);
+			found = cmd_find_best_client(s);
 	}
-	if (c == NULL && !quiet)
+	if (found == NULL && item != NULL && !quiet)
 		cmdq_error(item, "no current client");
-	log_debug("%s: no target, return %p", __func__, c);
-	return (c);
+	log_debug("%s: no target, return %p", __func__, found);
+	return (found);
 }
 
 /* Find the target client or report an error and return NULL. */
diff --git a/cmd-list-keys.c b/cmd-list-keys.c
index 7e340516..e1ec4d3c 100644
--- a/cmd-list-keys.c
+++ b/cmd-list-keys.c
@@ -269,7 +269,7 @@ cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 				tmpsize *= 2;
 				tmp = xrealloc(tmp, tmpsize);
 			}
-			tmpused = strlcat(tmp, cp, tmpsize);
+			strlcat(tmp, cp, tmpsize);
 			tmpused = strlcat(tmp, " ", tmpsize);
 			free(cp);
 
@@ -279,7 +279,7 @@ cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
 				tmpsize *= 2;
 				tmp = xrealloc(tmp, tmpsize);
 			}
-			tmpused = strlcat(tmp, cp, tmpsize);
+			strlcat(tmp, cp, tmpsize);
 			tmpused = strlcat(tmp, " ", tmpsize);
 			free(cp);
 
diff --git a/cmd-new-session.c b/cmd-new-session.c
index a75fc972..725448fd 100644
--- a/cmd-new-session.c
+++ b/cmd-new-session.c
@@ -207,7 +207,8 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 				goto fail;
 			}
 		}
-	}
+	} else
+		dsx = 80;
 	if (args_has(args, 'y')) {
 		tmp = args_get(args, 'y');
 		if (strcmp(tmp, "-") == 0) {
@@ -222,7 +223,8 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 				goto fail;
 			}
 		}
-	}
+	} else
+		dsy = 24;
 
 	/* Find new session size. */
 	if (!detached && !is_control) {
@@ -233,13 +235,14 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 	} else {
 		tmp = options_get_string(global_s_options, "default-size");
 		if (sscanf(tmp, "%ux%u", &sx, &sy) != 2) {
-			sx = 80;
-			sy = 24;
-		}
-		if (args_has(args, 'x'))
 			sx = dsx;
-		if (args_has(args, 'y'))
 			sy = dsy;
+		} else {
+			if (args_has(args, 'x'))
+				sx = dsx;
+			if (args_has(args, 'y'))
+				sy = dsy;
+		}
 	}
 	if (sx == 0)
 		sx = 1;
diff --git a/cmd-send-keys.c b/cmd-send-keys.c
index 5770572a..15967b0c 100644
--- a/cmd-send-keys.c
+++ b/cmd-send-keys.c
@@ -152,7 +152,7 @@ cmd_send_keys_exec(struct cmd *self, struct cmdq_item *item)
 			return (CMD_RETURN_ERROR);
 		}
 		if (wme != NULL && (args_has(args, 'X') || args->argc == 0)) {
-			if (wme == NULL || wme->mode->command == NULL) {
+			if (wme->mode->command == NULL) {
 				cmdq_error(item, "not in a mode");
 				return (CMD_RETURN_ERROR);
 			}
diff --git a/cmd-show-options.c b/cmd-show-options.c
index da481139..bd044412 100644
--- a/cmd-show-options.c
+++ b/cmd-show-options.c
@@ -211,11 +211,9 @@ cmd_show_options_all(struct cmd *self, struct cmdq_item *item, int scope,
 
 		if ((self->entry != &cmd_show_hooks_entry &&
 		    !args_has(self->args, 'H') &&
-		    oe != NULL &&
 		    (oe->flags & OPTIONS_TABLE_IS_HOOK)) ||
 		    (self->entry == &cmd_show_hooks_entry &&
-		    (oe == NULL ||
-		    (~oe->flags & OPTIONS_TABLE_IS_HOOK))))
+		    (~oe->flags & OPTIONS_TABLE_IS_HOOK)))
 			continue;
 
 		o = options_get_only(oo, oe->name);
diff --git a/cmd-switch-client.c b/cmd-switch-client.c
index 61677761..cf84c319 100644
--- a/cmd-switch-client.c
+++ b/cmd-switch-client.c
@@ -73,7 +73,6 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 		return (CMD_RETURN_ERROR);
 	s = item->target.s;
 	wl = item->target.wl;
-	w = wl->window;
 	wp = item->target.wp;
 
 	if (args_has(args, 'r'))
@@ -115,6 +114,7 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 		if (item->client == NULL)
 			return (CMD_RETURN_NORMAL);
 		if (wl != NULL && wp != NULL) {
+			w = wl->window;
 			if (window_push_zoom(w, args_has(self->args, 'Z')))
 				server_redraw_window(w);
 			window_redraw_active_switch(w, wp);
diff --git a/format.c b/format.c
index 10ea3201..16b3e26c 100644
--- a/format.c
+++ b/format.c
@@ -900,11 +900,12 @@ static void
 format_cb_pane_at_top(struct format_tree *ft, struct format_entry *fe)
 {
 	struct window_pane	*wp = ft->wp;
-	struct window		*w = wp->window;
+	struct window		*w;
 	int			 status, flag;
 
 	if (wp == NULL)
 		return;
+	w = wp->window;
 
 	status = options_get_number(w->options, "pane-border-status");
 	if (status == PANE_STATUS_TOP)
@@ -919,11 +920,12 @@ static void
 format_cb_pane_at_bottom(struct format_tree *ft, struct format_entry *fe)
 {
 	struct window_pane	*wp = ft->wp;
-	struct window		*w = wp->window;
+	struct window		*w;
 	int			 status, flag;
 
 	if (wp == NULL)
 		return;
+	w = wp->window;
 
 	status = options_get_number(w->options, "pane-border-status");
 	if (status == PANE_STATUS_BOTTOM)
diff --git a/grid.c b/grid.c
index 9678bf59..f33bc98d 100644
--- a/grid.c
+++ b/grid.c
@@ -1343,17 +1343,13 @@ grid_wrap_position(struct grid *gd, u_int px, u_int py, u_int *wx, u_int *wy)
 void
 grid_unwrap_position(struct grid *gd, u_int *px, u_int *py, u_int wx, u_int wy)
 {
-	u_int	yy, ax = 0, ay = 0;
+	u_int	yy, ay = 0;
 
 	for (yy = 0; yy < gd->hsize + gd->sy - 1; yy++) {
 		if (ay == wy)
 			break;
-		if (gd->linedata[yy].flags & GRID_LINE_WRAPPED)
-			ax += gd->linedata[yy].cellused;
-		else {
-			ax = 0;
+		if (~gd->linedata[yy].flags & GRID_LINE_WRAPPED)
 			ay++;
-		}
 	}
 
 	/*
diff --git a/key-string.c b/key-string.c
index 76ee4fbe..2a0602b2 100644
--- a/key-string.c
+++ b/key-string.c
@@ -229,10 +229,8 @@ key_string_lookup_string(const char *string)
 			key -= 64;
 		else if (key == 32)
 			key = 0;
-		else if (key == '?')
-			key = 127;
 		else if (key == 63)
-			key = KEYC_BSPACE;
+			key = 127;
 		else
 			return (KEYC_UNKNOWN);
 		modifiers &= ~KEYC_CTRL;
diff --git a/regsub.c b/regsub.c
index 22e236dc..4039b9be 100644
--- a/regsub.c
+++ b/regsub.c
@@ -24,8 +24,7 @@
 #include "tmux.h"
 
 static void
-regsub_copy(char **buf, size_t *len, const char *text, size_t start,
-    size_t end)
+regsub_copy(char **buf, size_t *len, const char *text, size_t start, size_t end)
 {
 	size_t	add = end - start;
 
diff --git a/server-client.c b/server-client.c
index 355e4eca..76d20ddb 100644
--- a/server-client.c
+++ b/server-client.c
@@ -604,10 +604,9 @@ have_event:
 			wp = window_get_active_at(s->curw->window, px, py);
 			if (wp != NULL)
 				where = PANE;
+			else
+				return (KEYC_UNKNOWN);
 		}
-
-		if (where == NOWHERE)
-			return (KEYC_UNKNOWN);
 		if (where == PANE)
 			log_debug("mouse %u,%u on pane %%%u", x, y, wp->id);
 		else if (where == BORDER)
@@ -1541,7 +1540,7 @@ server_client_reset_state(struct client *c)
 	struct window_pane	*wp = w->active, *loop;
 	struct screen		*s;
 	struct options		*oo = c->session->options;
-	int			 mode, cursor = 0;
+	int			 mode, cursor;
 	u_int			 cx = 0, cy = 0, ox, oy, sx, sy;
 
 	if (c->flags & (CLIENT_CONTROL|CLIENT_SUSPENDED))
diff --git a/tmux.h b/tmux.h
index b3b7ace0..f0ea4a79 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2471,7 +2471,6 @@ void	 screen_select_cell(struct screen *, struct grid_cell *,
 void	 screen_alternate_on(struct screen *, struct grid_cell *, int);
 void	 screen_alternate_off(struct screen *, struct grid_cell *, int);
 
-
 /* window.c */
 extern struct windows windows;
 extern struct window_pane_tree all_window_panes;
diff --git a/window-buffer.c b/window-buffer.c
index a1939b0f..80092fbd 100644
--- a/window-buffer.c
+++ b/window-buffer.c
@@ -347,9 +347,8 @@ window_buffer_do_paste(void *modedata, void *itemdata, struct client *c,
 {
 	struct window_buffer_modedata	*data = modedata;
 	struct window_buffer_itemdata	*item = itemdata;
-	struct paste_buffer		*pb;
 
-	if ((pb = paste_get_name(item->name)) != NULL)
+	if (paste_get_name(item->name) != NULL)
 		mode_tree_run_command(c, NULL, data->command, item->name);
 }
 
diff --git a/window-copy.c b/window-copy.c
index 5a1a03ec..14f7a284 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -1055,14 +1055,15 @@ window_copy_cmd_history_bottom(struct window_copy_cmd_state *cs)
 {
 	struct window_mode_entry	*wme = cs->wme;
 	struct window_copy_mode_data	*data = wme->data;
+	struct screen			*s = data->backing;
 	u_int				 oy;
 
-	oy = screen_hsize(data->backing) + data->cy - data->oy;
+	oy = screen_hsize(s) + data->cy - data->oy;
 	if (data->lineflag == LINE_SEL_RIGHT_LEFT && oy == data->endsely)
 		window_copy_other_end(wme);
 
 	data->cy = screen_size_y(&data->screen) - 1;
-	data->cx = window_copy_find_length(wme, data->cy);
+	data->cx = window_copy_find_length(wme, screen_hsize(s) + data->cy);
 	data->oy = 0;
 
 	if (data->searchmark != NULL && !data->timeout)
@@ -4151,7 +4152,6 @@ window_copy_cursor_previous_word_pos(struct window_mode_entry *wme,
 				    data->oy >=
 				    screen_hsize(data->backing) - 1))
 					goto out;
-				py--;
 
 				py = screen_hsize(data->backing) + data->cy -
 				    data->oy;
@@ -4360,7 +4360,7 @@ window_copy_start_drag(struct client *c, struct mouse_event *m)
 		data->selflag = SEL_CHAR;
 	switch (data->selflag) {
 		case SEL_WORD:
-			if (data->ws) {
+			if (data->ws != NULL) {
 				window_copy_update_cursor(wme, x, y);
 				window_copy_cursor_previous_word_pos(wme,
 				    data->ws, 0, &x, &y);
diff --git a/window.c b/window.c
index 4aca6d32..092e7865 100644
--- a/window.c
+++ b/window.c
@@ -1223,7 +1223,7 @@ window_pane_search(struct window_pane *wp, const char *term, int regex,
 		}
 		log_debug("%s: %s", __func__, line);
 		if (!regex)
-			found = (fnmatch(new, line, 0) == 0);
+			found = (fnmatch(new, line, flags) == 0);
 		else
 			found = (regexec(&r, line, 0, NULL, 0) == 0);
 		free(line);