From 2767139e056cb9b8585634f8eb9d174589f85905 Mon Sep 17 00:00:00 2001 From: akr Date: Wed, 3 Apr 2013 11:55:18 +0000 Subject: [PATCH] * 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 --- ChangeLog | 6 ++++++ process.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/ChangeLog b/ChangeLog index 8c2a38e716..ab260a6ef4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +Wed Apr 3 20:52:49 2013 Tanaka Akira + + * process.c: Describe the behavior which Ruby invokes a commandline + directly without shell if the commandline is simple enough. + [ruby-core:50459] [Bug #7489] + Wed Apr 3 20:27:37 2013 Tanaka Akira * ext/extmk.rb (extmake): Invoke Logging::log_close in a ensure diff --git a/process.c b/process.c index bb980701c1..5fd08c3e61 100644 --- a/process.c +++ b/process.c @@ -2349,6 +2349,12 @@ static int rb_exec_without_timer_thread(const struct rb_execarg *eargp, char *er * The standard shell means always "/bin/sh" on Unix-like systems, * ENV["RUBYSHELL"] or ENV["COMSPEC"] 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