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64dfd1883e
zig fmt previously would write a temp file, and then either rename it into place if necessary, or unlink it if nothing was changed. Now zig fmt renders into a memory buffer, and only writes the temp file and renames it into place if anything changed. Based on the performance testing I did this actually did not have much of an impact, however it's likely that on other operating systems and other hard drives this could make a big difference.