add option to align wrapped lines under the nick or message

When nick indentation is off, lines after the first wrap back to the
left edge, under the timestamp. Add a text_wrap_align preference
(start of line, prefix, message) so they can line up under the nick or
the message text instead. It is applied at wrap time, so existing
scrollback is re-wrapped when the setting changes, and the menu is
greyed out while nick indentation is on.

src/common/cfgfiles.c

@@ -590,6 +590,7 @@ const struct prefs vars[] =
 	{"gui_gtk3_theme", P_OFFSET (hex_gui_gtk3_theme), TYPE_STR},
 	{"text_indent", P_OFFINT (hex_text_indent), TYPE_BOOL},
 	{"text_max_indent", P_OFFINT (hex_text_max_indent), TYPE_INT},
+	{"text_wrap_align", P_OFFINT (hex_text_wrap_align), TYPE_INT},
 	{"text_max_lines", P_OFFINT (hex_text_max_lines), TYPE_INT},
 	{"text_replay", P_OFFINT (hex_text_replay), TYPE_BOOL},
 	{"text_search_case_match", P_OFFINT (hex_text_search_case_match), TYPE_BOOL},
@@ -881,6 +882,7 @@ load_default_config(void)
 	prefs.hex_net_reconnect_delay = 10;
 	prefs.hex_notify_timeout = 15;
 	prefs.hex_text_max_indent = 256;
+	prefs.hex_text_wrap_align = 0;
 	prefs.hex_text_max_lines = 5000;
 	prefs.hex_url_grabber_limit = 100; 		/* 0 means unlimited */
 

src/common/zoitechat.h

@@ -306,6 +306,7 @@ struct zoitechatprefs
 	int hex_net_reconnect_delay;
 	int hex_notify_timeout;
 	int hex_text_max_indent;
+	int hex_text_wrap_align;
 	int hex_text_max_lines;
 	int hex_url_grabber_limit;