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nixpkgs/pkgs/tools/misc/parallel/fix-max-line-length-allowed.diff
Bjørn Forsman 3d4e133e77 parallel: fix calculation of max line length
parallel >= 20200822 uses /bin/echo to calculate the max allowed line
length. Patch it to a correct path, so that it doesn't (silently) fail
and fall back to a low value of 324.

Before:
  $ parallel --max-line-length-allowed
  324

After:
  $ parallel --max-line-length-allowed
  131063

Fixes: 16ca8725ff ("parallel: 20200722 -> 20200822")
2020-10-24 09:55:06 +02:00

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Diff

Correct path to coreutils echo to fix parallel --max-line-length-allowed.
Author: Bjørn Forsman
diff --git a/src/parallel b/src/parallel
index a047fd94..9fc5f671 100755
--- a/src/parallel
+++ b/src/parallel
@@ -11580,7 +11580,7 @@ sub is_acceptable_command_line_length($$) {
$len += length $Global::parallel_env;
}
# Force using non-built-in command
- ::qqx("/bin/echo ".${string}x(($len-length "/bin/echo ")/length $string));
+ ::qqx("@coreutils@/bin/echo ".${string}x(($len-length "@coreutils@/bin/echo ")/length $string));
::debug("init", "$len=$? ");
return not $?;
}