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| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | process.c | 6 |
2 files changed, 12 insertions, 0 deletions
@@ -1,3 +1,9 @@ +Wed Apr 3 20:52:49 2013 Tanaka Akira <akr@fsij.org> + + * 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 <akr@fsij.org> * ext/extmk.rb (extmake): Invoke Logging::log_close in a ensure @@ -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 |