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2de30c7350
- \r\n is common a line end combination - catting such a file without options causes it to display normally - overwriting the first char with $, loses info * src/cat.c (cat): Convert \r preceeding a \n to ^M. * tests/misc/cat-E.sh: New test. * tests/local.mk: Reference new test. * tests/misc/cat-proc.sh: Fix typo. * doc/coreutils.texi (cat invocation): Mention the new behavior. * NEWS: Mention the improvement.
39 lines
1.3 KiB
Bash
Executable File
39 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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# Ensure that cat -E produces same output as cat, modulo '$'s,
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# even when applied to a file in /proc.
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# Copyright (C) 2006-2021 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ cat
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f=/proc/cpuinfo
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test -f $f \
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|| skip_ "no $f"
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# Yes, parts of /proc/cpuinfo might change between cat runs.
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# If that happens, consider choosing a file that's less likely to change,
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# or just filter out the changing lines. The sed filter should help
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# to avoid any spurious numeric differences.
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cat -E $f | sed 's/[0-9][0-9]*/D/g' | tr -d '$' > out || fail=1
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cat $f | sed 's/[0-9][0-9]*/D/g' | tr -d '$' > exp || fail=1
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compare exp out || fail=1
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Exit $fail
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