Fix infinite loop in textarea wordLeft navigation#987
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May 22, 2026 06:20
When navigating left in a textarea, if we encounter spaces at the very beginning of the input (col=0, row=0), the loop to skip spaces would run infinitely because characterLeft does nothing at the beginning and the cursor never advances. This PR adds a boundary check to break the loop if the cursor reaches col=0, row=0.
This adds TestWordLeftInfiniteLoopRepro to textarea_test.go to verify the wordLeft boundary fix.
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When navigating left in a textarea, if we encounter spaces at the very beginning of the input (col=0, row=0), the loop to skip spaces would run infinitely because characterLeft does nothing at the beginning and the cursor never advances.
This PR adds a boundary check to break the loop if the cursor reaches col=0, row=0.