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author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-04-03 11:55:18 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-04-03 11:55:18 +0000 |
commit | 2767139e056cb9b8585634f8eb9d174589f85905 (patch) | |
tree | c3e219583bcb068a29d837c825b719f6cc57ac28 /process.c | |
parent | b87ba9f87264a7acad0cfb203180ce3315554feb (diff) | |
download | ruby-2767139e056cb9b8585634f8eb9d174589f85905.tar.gz |
* process.c: Describe the behavior which Ruby invokes a commandline
directly without shell if the commandline is simple enough.
[ruby-core:50459] [Bug #7489]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'process.c')
-rw-r--r-- | process.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -2349,6 +2349,12 @@ static int rb_exec_without_timer_thread(const struct rb_execarg *eargp, char *er * The standard shell means always <code>"/bin/sh"</code> on Unix-like systems, * <code>ENV["RUBYSHELL"]</code> or <code>ENV["COMSPEC"]</code> on Windows NT series, and * similar. + * If _commandline_ is simple enough, + * no meta characters, no shell reserved word and no special built-in, + * Ruby invokes the command directly without shell. + * You can force shell invocation by adding ";" for _commandline_ (because ";" is a meta characetr). + * Note that this behavior is observable by pid obtained + * (return value of spawn() and IO#pid for IO.popen) is the pid of the invoked command, not shell. * * If two or more +string+ given, * the first is taken as a command name and |