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00ad4b4cf2
It was a grouping issue where we treated spaces before key-value pairs as not optional. Fixing this by making them optional created another issue, where we ran out of capture groups - sed support only 10 capture groups from \0 to \9, and the first fix caused the keyvals to become 11th captured group. To work around this issue, I added some non-capturing variants of some regexps and used that to reduce the number of captured groups from 11 to 8.