4f7fb13f87
Right now running `expr` to start the multiline expression editor and then pressing enter causes an empty history empty to be created for the multiline editor. That doesn't seem very useful for users as pressing the 'up' key will now also bring up these empty expressions. I don't think there is ever a use case for recalling a completely empty expression from the history, so instead don't save those entries to the history file and make sure we never recall them when navigating over the expression history. Note: This is actually a Swift downstream patch that got shipped with Apple's LLDB for many years. However, this recently started conflicting with upstream LLDB as D100048 added a test that made sure that empty expression entries don't crash LLDB. Apple's LLDB was never affected by this crash as it never saved empty expressions in the first place. Reviewed By: augusto2112 Differential Revision: https://reviews.llvm.org/D108983 |
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