consistent the handling and typing of the language-specific Space character

app/src/main/java/io/github/sspanak/tt9/ime/HotkeyHandler.java

@@ -10,6 +10,7 @@ import io.github.sspanak.tt9.ime.modes.InputModeKind;
 import io.github.sspanak.tt9.languages.LanguageKind;
 import io.github.sspanak.tt9.ui.UI;
 import io.github.sspanak.tt9.util.Ternary;
+import io.github.sspanak.tt9.util.chars.Characters;
 
 public abstract class HotkeyHandler extends CommandHandler {
 	@Override
@@ -411,7 +412,7 @@ public abstract class HotkeyHandler extends CommandHandler {
 		}
 
 		// type a space when there is nothing to accept
-		return onText(" ", validateOnly);
+		return onText(Characters.getSpace(mLanguage), validateOnly);
 	}
 
 

app/src/main/java/io/github/sspanak/tt9/ime/modes/Mode123.java

@@ -29,7 +29,7 @@ class Mode123 extends ModePassthrough {
 		if (inputType.isPhoneNumber()) {
 			setSpecificSpecialCharacters(Characters.Phone, false);
 		} else if (inputType.isNumeric()) {
-			setSpecificSpecialCharacters(Characters.getNumberSpecialCharacters(inputType.isDecimal(), inputType.isSignedNumber()), false);
+			setSpecificSpecialCharacters(Characters.getSpecialForNumbers(inputType.isDecimal(), inputType.isSignedNumber()), false);
 		} else if (isEmailMode) {
 			setSpecificSpecialCharacters(Characters.Email, true);
 		} else {

app/src/main/java/io/github/sspanak/tt9/ime/modes/ModeBopomofo.java

@@ -47,7 +47,7 @@ public class ModeBopomofo extends ModePinyin {
 	 */
 	protected void setCustomSpecialCharacters() {
 		// special
-		KEY_CHARACTERS.add(TextTools.removeLettersFromList(applyPunctuationOrder(Characters.Special, 0)));
+		KEY_CHARACTERS.add(TextTools.removeLettersFromList(applyPunctuationOrder(Characters.getSpecial(language), 0)));
 		KEY_CHARACTERS.get(0).add(0, "0");
 
 		// punctuation

app/src/main/java/io/github/sspanak/tt9/ime/modes/ModeCheonjiin.java

@@ -68,7 +68,7 @@ class ModeCheonjiin extends InputMode {
 	 */
 	protected void setCustomSpecialCharacters() {
 		// special
-		KEY_CHARACTERS.add(TextTools.removeLettersFromList(applyPunctuationOrder(Characters.Special, 0)));
+		KEY_CHARACTERS.add(TextTools.removeLettersFromList(applyPunctuationOrder(Characters.getSpecial(language), 0)));
 		KEY_CHARACTERS.get(0).add(0, "0");
 
 		// punctuation

app/src/main/java/io/github/sspanak/tt9/ime/modes/ModeIdeograms.java

@@ -12,7 +12,6 @@ import io.github.sspanak.tt9.preferences.settings.SettingsStore;
 import io.github.sspanak.tt9.util.Logger;
 import io.github.sspanak.tt9.util.Text;
 import io.github.sspanak.tt9.util.TextTools;
-import io.github.sspanak.tt9.util.chars.Characters;
 
 public class ModeIdeograms extends ModeWords {
 	private static final String LOG_TAG = ModeIdeograms.class.getSimpleName();
@@ -50,16 +49,6 @@ public class ModeIdeograms extends ModeWords {
 		isFiltering = false;
 	}
 
-
-	@Override
-	protected void setCustomSpecialCharacters() {
-		KEY_CHARACTERS.add(applyPunctuationOrder(Characters.Special, 0));
-		int spaceIndex = KEY_CHARACTERS.get(0).indexOf(" ");
-		if (spaceIndex >= 0) {
-			KEY_CHARACTERS.get(0).set(spaceIndex, Characters.IDEOGRAPHIC_SPACE);
-		}
-	}
-
 	/******************************* LOAD SUGGESTIONS *********************************/
 
 	@Override

app/src/main/java/io/github/sspanak/tt9/languages/NaturalLanguage.java

@@ -84,7 +84,7 @@ public class NaturalLanguage extends TranscribedLanguage {
 		final String PUNCTUATION_PLACEHOLDER = "PUNCTUATION";
 
 		final Map<String, List<String>> specialChars = new HashMap<>();
-		specialChars.put(SPECIAL_CHARS_PLACEHOLDER, Characters.Special);
+		specialChars.put(SPECIAL_CHARS_PLACEHOLDER, Characters.getSpecial(this));
 		specialChars.put(PUNCTUATION_PLACEHOLDER, Characters.PunctuationEnglish);
 		specialChars.put(PUNCTUATION_PLACEHOLDER + "_AR", Characters.PunctuationArabic);
 		specialChars.put(PUNCTUATION_PLACEHOLDER + "_ZH", Characters.PunctuationChinese);

app/src/main/java/io/github/sspanak/tt9/util/chars/Characters.java

@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 
 import io.github.sspanak.tt9.languages.Language;
+import io.github.sspanak.tt9.languages.LanguageKind;
 
 public class Characters extends Emoji {
 	public static final String COMBINING_ZERO_BASE = "◌";
@@ -13,10 +14,6 @@ public class Characters extends Emoji {
 		"$", "€", "₿", "¢", "¤", "₱", "¥", "£"
 	));
 
-	final public static ArrayList<String> Special = new ArrayList<>(Arrays.asList(
-		" ", "\n", "@", "_", "#", "%", "[", "]", "{", "}", "§", "|", "^", "<", ">", "\\", "/", "=", "*", "+"
-	));
-
 	/**
 	 * The English punctuation filtered to contain only valid email characters.
 	 */
@@ -34,10 +31,27 @@ public class Characters extends Emoji {
 		new ArrayList<>(Arrays.asList("-", "(", ")", ".", ";", ","))
 	));
 
+	/**
+	 * Returns the language-specific space character.
+	 */
+	public static String getSpace(Language language) {
+		return LanguageKind.isChinese(language) || LanguageKind.isJapanese(language) ? IDEOGRAPHIC_SPACE : " ";
+	}
+
+	/**
+	 * Standard special characters with automatic Space selection based on the language. Useful for
+	 * text fields.
+	 */
+	public static ArrayList<String> getSpecial(Language language) {
+		return new ArrayList<>(Arrays.asList(
+			getSpace(language), "\n", "@", "_", "#", "%", "[", "]", "{", "}", "§", "|", "^", "<", ">", "\\", "/", "=", "*", "+"
+		));
+	}
+
 	/**
 	 * Special characters for all kinds of numeric fields: integer, decimal with +/- included as necessary.
 	 */
-	public static ArrayList<ArrayList<String>> getNumberSpecialCharacters(boolean decimal, boolean signed) {
+	public static ArrayList<ArrayList<String>> getSpecialForNumbers(boolean decimal, boolean signed) {
 		ArrayList<ArrayList<String>> keyCharacters = new ArrayList<>();
 		keyCharacters.add(signed ? new ArrayList<>(Arrays.asList("-", "+")) : new ArrayList<>());
 		if (decimal) {