/usr/share/fish/functions/up-or-search.fish is in fish-common 2.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | function up-or-search -d "Depending on cursor position and current mode, either search backward or move up one line"
# If we are already in search mode, continue
if commandline --search-mode
commandline -f history-search-backward
return
end
# If we are navigating the pager, then up always navigates
if commandline --paging-mode
commandline -f up-line
return
end
# We are not already in search mode.
# If we are on the top line, start search mode,
# otherwise move up
set lineno (commandline -L)
switch $lineno
case 1
commandline -f history-search-backward
case '*'
commandline -f up-line
end
end
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