i dont wanna die

code/_globalvars/~doppler_globalvars/regexes.dm

@@ -0,0 +1,5 @@
+//Does the line end in any EOL char that isn't appropriate punctuation OR does it end in a chat-formatted markdown sequence (+bold+, etc) without a period?
+GLOBAL_DATUM_INIT(needs_eol_autopunctuation, /regex, regex(@"([a-zA-Z\d]|[^.?!~-][+|_])$"))
+
+//All non-capitalized 'i' surrounded with whitespace (aka, 'hello >i< am a cat')
+GLOBAL_DATUM_INIT(noncapital_i, /regex, regex(@"\b[i]\b", "g"))

code/_globalvars/~doppler_globalvars/text.dm

@@ -0,0 +1,9 @@
+/// Ensures sentences end in appropriate punctuation (a period if none exist) and that all whitespace-bounded 'i' characters are capitalized.
+/// If the sentence ends in chat-flavored markdown for bolds, italics or underscores and does not have a preceding period, exclamation mark or other flavored sentence terminator, add a period.
+/// (e.g: 'Borgs are rogue' becomes 'Borgs are rogue.', '+BORGS ARE ROGUE+ becomes '+BORGS ARE ROGUE+.', '+Borgs are rogue~+' is untouched.)
+/proc/autopunct_bare(input_text)
+	if (findtext(input_text, GLOB.needs_eol_autopunctuation))
+		input_text += "."
+
+	input_text = replacetext(input_text, GLOB.noncapital_i, "I")
+	return input_text

code/modules/mob/living/living_say.dm

@@ -230,6 +230,10 @@ GLOBAL_LIST_INIT(message_modes_stat_limits, list(
 
 	//Get which verb is prefixed to the message before radio but after most modifications
 	message_mods[SAY_MOD_VERB] = say_mod(message, message_mods)
+	// DOPPLER EDIT ADDITION START: autopunctuation
+	//ensure EOL punctuation exists and that word-bounded 'i' are capitalized before we do anything else
+	message = autopunct_bare(message)
+	// DOPPLER EDIT ADDITION END
 
 	//This is before anything that sends say a radio message, and after all important message type modifications, so you can scumb in alien chat or something
 	if(saymode && !saymode.handle_message(src, message, language))

code/modules/unit_tests/say.dm

@@ -200,7 +200,8 @@
 	speaker.forceMove(run_loc_floor_bottom_left)
 	listener.forceMove(locate((run_loc_floor_bottom_left.x + distance), run_loc_floor_bottom_left.y, run_loc_floor_bottom_left.z))
 
-	var/pangram_quote = "The quick brown fox jumps over the lazy dog"
+	var/pangram_quote = "The quick brown fox jumps over the lazy dog." // NOVA EDIT CHANGE - account for autopunct in living_say.dm - ORIGINAL: var/pangram_quote = "The quick brown fox jumps over the lazy dog"
+
 
 	// speaking
 	speaker.say(pangram_quote)
@@ -241,7 +242,7 @@
 	listener_radio.set_frequency(FREQ_CENTCOM)
 	listener_radio.special_channels = RADIO_SPECIAL_CENTCOM
 
-	var/pangram_quote = "The quick brown fox jumps over the lazy dog"
+	var/pangram_quote = "The quick brown fox jumps over the lazy dog." // NOVA EDIT CHANGE - account for autopunct in living_say.dm - ORIGINAL: var/pangram_quote = "The quick brown fox jumps over the lazy dog"
 
 	speaker.say(pangram_quote)
 	TEST_ASSERT(handle_speech_result, "Handle speech signal was not fired (radio test)")

tgstation.dme

@@ -608,7 +608,9 @@
 #include "code\_globalvars\~doppler_globalvars\bitfields.dm"
 #include "code\_globalvars\~doppler_globalvars\configuration.dm"
 #include "code\_globalvars\~doppler_globalvars\objective.dm"
+#include "code\_globalvars\~doppler_globalvars\regexes.dm"
 #include "code\_globalvars\~doppler_globalvars\religion.dm"
+#include "code\_globalvars\~doppler_globalvars\text.dm"
 #include "code\_js\byjax.dm"
 #include "code\_js\menus.dm"
 #include "code\_onclick\adjacent.dm"