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split: print "creating file" with --verbose in the -n modes - #15600

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fixfon:fix/15583-split-verbose-n
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fixfon:fix/15583-split-verbose-n

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@fixfon

@fixfon fixfon commented Oct 21, 2026

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In the -n modes, split --verbose never printed "creating file". Those modes open their output files through OutFiles (init, and instantiate_writer for the lazy -e path), and neither of them called print_creating_file, which is what -b, -l and -C already use.

Both paths now call it right before the file is opened. I also added an announced flag on OutFile, so a file that gets reopened because of the fd limit isn't announced a second time. The K/N forms write to stdout and create no file, so they still print nothing.

Added test_verbose_number_of_chunks, which covers 14 combinations and fails on main, plus a small test checking that -n K/N stays quiet. I also compared the output against GNU 9.12 split on macOS for -n N, l/N, r/N, with and without -e, and for empty input. Output and order match in all of them.

Not touched, since main already behaves this way: with --filter, GNU prints "executing with FILE=..." while we print "creating file". When it runs into a low ulimit -n, GNU also announces a file again each time it reopens it.

Fixes #15583

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@fixfon please drop the merge commit and then squash into one commit

--verbose announced the output files for -b, -l and -C but not for any
--number mode, because the files are opened through OutFiles, which never
called print_creating_file. Announce each file once, right before it is
first opened, whether OutFiles opens it up front or lazily (-e). Kth-chunk
modes write to stdout and still print nothing.

Fixes uutils#15583
@fixfon
fixfon force-pushed the fix/15583-split-verbose-n branch from bb20494 to 8b7cc48 Compare October 26, 2026 18:24

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split: --verbose prints nothing with -n/--number

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