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<?php for ($c = 'a'; $c <= 'z'; $c[0]++) { echo "$c\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
a Fatal error: Uncaught Error: Cannot increment/decrement string offsets in /in/MkCNE:3 Stack trace: #0 {main} thrown in /in/MkCNE on line 3
Process exited with code 255.

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