From 9e388285b965509fea6aa9cdb52b4aacf3a8728c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Haoran=20S=2E=20Diao=20=28=E5=88=81=E6=B5=A9=E7=84=B6=29?=
 <0@hairydiode.xyz>
Date: Fri, 12 Sep 2025 03:17:07 -0700
Subject: Added passthrough logic for selector keys

---
 im.h | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

(limited to 'im.h')

diff --git a/im.h b/im.h
index e3b2b65..d92191c 100644
--- a/im.h
+++ b/im.h
@@ -22,26 +22,40 @@
 #define ESCAPE_KEY '`'
 //Vertical Tab Ctrl+K
 #define TOGGLE_KEY 0x0B
-#define IM_KEY_RANGE_LEN 5
+#define IM_KEY_RANGE_LEN 3
+#define IM_SELECTOR_RANGE_LEN 2
 
 //Array of Input method key ranges(inclusive) seperate from the above
 char im_key_ranges[IM_KEY_RANGE_LEN][2] = {
 	{'a','z'},
-	{'0','9'},
-	{' ',' '},
 	{',',','},
 	{'.','.'},
 };
-int is_im_key(char input) {
+//array of selector ranges, these keys never start a sequence
+char im_selector_ranges[IM_SELECTOR_RANGE_LEN][2] = {
+	{'0','9'},
+	{' ',' '},
+};
+//if chars = 0, only return im_keys, otherwise iwll return true for im keys and
+//selector keys
+int is_im_key(char input, unsigned int chars) {
 	for (int i = 0; i < IM_KEY_RANGE_LEN; i++) {
 		if (input >= im_key_ranges[i][0] && input <= im_key_ranges[i][1]) {
 			return 1;
 		}
 	}
+	if (chars > 0) {
+		for (int j = 0; j < IM_SELECTOR_RANGE_LEN; j++) {
+			if (input >= im_selector_ranges[j][0] && input <= im_selector_ranges[j][1]) {
+				return 1;
+			}
+		}
+		
+	}
 	return 0;
 }
 char im_buffer[IM_BUFFER_LEN+1];
-char im_buffer_pos = 0;
+unsigned int  im_buffer_pos = 0;
 int im_on = 1;
 //clears the im buffer
 void clear_im_buffer() {
@@ -104,7 +118,7 @@ int update_im_state(char input, char * output) {
 		output[1] = 0;
 		return 1;
 	}
-	if ( is_im_key(input) ) {
+	if ( is_im_key(input, im_buffer_pos) ) {
 		//check if there's enough room in the im buffer
 		if ( (im_buffer_pos < IM_BUFFER_LEN) && (im_buffer_pos < IM_TABLE_ENTRY_LEN) ){
 			im_buffer[im_buffer_pos] = input;
-- 
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