mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-23 23:48:05 +08:00
52dcfe11af
Up to now, in normal locales \x was essentially the same as \X, except that it errored if given a value > 0x7f. That's kind of annoying and useless. A subtle change is that `\xHH` now represents the character (if any) encoded by the byte value "HH", so even for values <= 0x7f if that's not the same as the ASCII value we would diverge. I do not believe anyone has ever run fish on a system where that distinction matters. It isn't a thing for UTF-8, it isn't a thing for ASCII, it isn't a thing for UTF-16, it isn't a thing for any extended ASCII scheme - ISO8859-X, it isn't a thing for SHIFT-JIS. I am reasonably certain we are making that same assumption in other places. Fixes #1352
105 lines
3.8 KiB
Fish
105 lines
3.8 KiB
Fish
#RUN: %fish -C "set fish %fish" %s
|
|
# This hangs when running on github actions with tsan for unknown reasons,
|
|
# see #7934.
|
|
#REQUIRES: test -z "$GITHUB_WORKFLOW"
|
|
|
|
# We typically try to force a utf8-capable locale,
|
|
# this turns that off.
|
|
set -gx fish_allow_singlebyte_locale 1
|
|
|
|
# A function to display bytes, necessary because GNU and BSD implementations of `od` have different output.
|
|
# We used to use xxd, but it's not available everywhere. See #3797.
|
|
#
|
|
# We use the lowest common denominator format, `-b`, because it should work in all implementations.
|
|
# I wish we could use the `-t` flag but it isn't available in every OS we're likely to run on.
|
|
#
|
|
function display_bytes
|
|
od -b | sed -e 's/ */ /g' -e 's/ *$//'
|
|
end
|
|
|
|
# Verify that our UTF-8 locale produces the expected output.
|
|
echo -n A\u00FCA | display_bytes
|
|
#CHECK: 0000000 101 303 274 101
|
|
#CHECK: 0000004
|
|
|
|
# Verify that exporting a change to the C locale produces the expected output.
|
|
# The output should include the literal byte \xFC rather than the UTF-8 sequence for \u00FC.
|
|
begin
|
|
set -lx LC_ALL C
|
|
echo -n B\u00FCB | display_bytes
|
|
end
|
|
#CHECK: 0000000 102 374 102
|
|
#CHECK: 0000003
|
|
|
|
# Since the previous change was localized to a block it should no
|
|
# longer be in effect and we should be back to a UTF-8 locale.
|
|
echo -n C\u00FCC | display_bytes
|
|
#CHECK: 0000000 103 303 274 103
|
|
#CHECK: 0000004
|
|
|
|
# Verify that setting a non-exported locale var doesn't affect the behavior.
|
|
# The output should include the UTF-8 sequence for \u00FC rather than that literal byte.
|
|
# Just like the previous test.
|
|
begin
|
|
set -l LC_ALL C
|
|
echo -n D\u00FCD | display_bytes
|
|
end
|
|
#CHECK: 0000000 104 303 274 104
|
|
#CHECK: 0000004
|
|
|
|
# Verify that fish can pass through non-ASCII characters in the C/POSIX
|
|
# locale. This is to prevent regression of
|
|
# https://github.com/fish-shell/fish-shell/issues/2802.
|
|
#
|
|
# These tests are needed because the relevant standards allow the functions
|
|
# mbrtowc() and wcrtomb() to treat bytes with the high bit set as either valid
|
|
# or invalid in the C/POSIX locales. GNU libc treats those bytes as invalid.
|
|
# Other libc implementations (e.g., BSD) treat them as valid. We want fish to
|
|
# always treat those bytes as valid.
|
|
|
|
# The fish in the middle of the pipeline should be receiving a UTF-8 encoded
|
|
# version of the unicode from the echo. It should pass those bytes thru
|
|
# literally since it is in the C locale. We verify this by first passing the
|
|
# echo output directly to the `xxd` program then via a fish instance. The
|
|
# output should be "58c3bb58" for the first statement and "58c3bc58" for the
|
|
# second.
|
|
echo -n X\u00FBX | display_bytes
|
|
echo X\u00FCX | env LC_ALL=C $fish -c 'read foo; echo -n $foo' | display_bytes
|
|
#CHECK: 0000000 130 303 273 130
|
|
#CHECK: 0000004
|
|
#CHECK: 0000000 130 303 274 130
|
|
#CHECK: 0000004
|
|
|
|
# The next tests deliberately spawn another fish instance to test inheritance of env vars.
|
|
|
|
# This test is subtle. Despite the presence of the \u00fc unicode char (a "u"
|
|
# with an umlaut) the fact the locale is C/POSIX will cause the \xfc byte to
|
|
# be emitted rather than the usual UTF-8 sequence \xc3\xbc. That's because the
|
|
# few single-byte unicode chars (that are not ASCII) are generally in the
|
|
# ISO 8859-x char sets which are encompassed by the C locale. The output should
|
|
# be "59fc59".
|
|
env LC_ALL=C $fish -c 'echo -n Y\u00FCY' | display_bytes
|
|
#CHECK: 0000000 131 374 131
|
|
#CHECK: 0000003
|
|
|
|
# The user can specify a wide unicode character (one requiring more than a
|
|
# single byte). In the C/POSIX locales we substitute a question-mark for the
|
|
# unencodable wide char. The output should be "543f54".
|
|
env LC_ALL=C $fish -c 'echo -n T\u01FDT' | display_bytes
|
|
#CHECK: 0000000 124 077 124
|
|
#CHECK: 0000003
|
|
|
|
string match ö \Xc3\Xb6
|
|
#CHECK: ö
|
|
|
|
math 5 \X2b 5
|
|
#CHECK: 10
|
|
|
|
math 7 \x2b 7
|
|
#CHECK: 14
|
|
|
|
echo \xc3\xb6
|
|
# CHECK: ö
|
|
echo \Xc3\Xb6
|
|
# CHECK: ö
|