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Fix external runtime detection under zsh and other shells.

The 'which' builtin command in zsh and tcsh behave differently from
(ba)sh, giving an output of 'xxx not found' if a command can't be

'command -v' is the POSIX-compliant way to find out the full path for
a given command, and should work under all shells.
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Marcus Brito
Marcus Brito committed Jun 21, 2011
1 parent bc2be5a commit da30b02a0b013c51e1eab4488180e8a446b045ee
Showing with 1 addition and 1 deletion.
  1. +1 −1 lib/execjs/external_runtime.rb
@@ -123,7 +123,7 @@ def which(command)
result = if
`#{ExecJS.root}/support/which.bat #{name}`
- `which #{name} 2>/dev/null`
+ `command -v #{name} 2>/dev/null`
if path = result.strip.split("\n").first

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