mirror of https://github.com/odrling/Aegisub
Don't try to coalesce undo operations when there aren't any undo operations to coalesce with. Fixes a crash when opening .txt files.
Originally committed to SVN as r4784.
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@ -771,8 +771,8 @@ wxString AssFile::GetWildcardList(int mode) {
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int AssFile::Commit(wxString desc, int amendId) {
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int AssFile::Commit(wxString desc, int amendId) {
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++commitId;
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++commitId;
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// Allow coalescing only if it's the last change and the file has not been
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// Allow coalescing only if it's the last change and the file has not been
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// saved since the last change
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// saved since the last change and the undo stack isn't empty
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if (commitId == amendId+1 && RedoStack.empty() && savedCommitId != commitId) {
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if (commitId == amendId+1 && RedoStack.empty() && savedCommitId != commitId && !UndoStack.empty()) {
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UndoStack.back() = *this;
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UndoStack.back() = *this;
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return commitId;
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return commitId;
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}
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}
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