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This function reads the lines from a file and filters its contents to report its head and tail contents. The amount of contents to read from a file can be tuned by the environment variable PG_TEST_FILE_READ_LINES, that can be used to override the default of 50 lines. If the file whose content is read has less lines than two times PG_TEST_FILE_READ_LINES, the whole file is returned. This will be used in a follow-up commit to limit the amount of information reported by some of the TAP tests on failure, where we have noticed that the contents reported by the buildfarm can be heavily bloated in some cases, with the head and tail contents of a report being able to provide enough information to be useful for debugging. Author: Nazir Bilal Yavuz <byavuz81@gmail.com> Co-authored-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/CAN55FZ1D6KXvjSs7YGsDeadqCxNF3UUhjRAfforzzP0k-cE=bA@mail.gmail.com |
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