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deal with BC_LINE_LENGTH not being honored

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FreeBSD 12, Dragonfly BSD, and presumably other BSDs don't recognize the
BC_LINE_LENGTH env var and might split the output at 70 chars.

Fixes #3414
This commit is contained in:
Kurtis Rader 2017-01-08 18:31:55 -08:00 committed by David Adam
parent e5bfdb99b6
commit 4223b3da68
1 changed files with 6 additions and 3 deletions
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9
share/functions/math.fish
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@ -22,11 +22,14 @@ function math --description "Perform math calculations in bc"
end
# Set BC_LINE_LENGTH to a ridiculously high number so it only uses one line for most results.
# Results with more digits than that are basically never used anyway.
# We can't use 0 since some systems (including macOS) use an ancient bc that doesn't support it.
# 32767 should still work on 2-byte int systems, though this is untested.
set -lx BC_LINE_LENGTH 32767
# We also can't count on this being recognized since some BSD systems don't recognize this env
# var at all and limit the line length to 70.
set -lx BC_LINE_LENGTH 500
set -l out (echo "scale=$scale; $argv" | bc)
if set -q out[2]
set out (string join '' (string replace \\ '' $out))
end
switch "$out"
case ''
# No output indicates an error occurred.