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fix(android): Skip if there's no left context to delete

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This commit is contained in:
Darcy Wong 2019-11-06 13:11:45 +07:00
parent 95c0206309
commit 8a74b8aa90
1 changed files with 6 additions and 1 deletions
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7
android/KMEA/app/src/main/java/com/tavultesoft/kmea/KMManager.java
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@ -318,12 +318,17 @@ public final class KMManager {
private static void performLeftDeletions(InputConnection ic, int dn) {
int originalBufferLength = dn*2 + 16; // characters
CharSequence charsBackup = ic.getTextBeforeCursor(originalBufferLength, 0);
int lastIndex = charsBackup.length()-1;
// Exit if there's no context to delete
if (lastIndex < 0) {
return;
}
// Count the number of surrogate pairs in this buffer, backwards from the end
// until we reach dn codepoints.
// Unfortunately, can't foreach charSequence in reverse
int numPairs = 0;
int lastIndex = charsBackup.length()-1;
int counter=0;
try {
do {