node.js到imagemagick命令中断(node.js to imagemagick command breaking)

我通过node.js调用一个imagemagick脚本，命令正在破坏，但我无法弄清楚原因。

我正在尝试做的简单示例：

var spawn = require('child_process').spawn, ls = spawn('convert', ['-size', '168x45', 'xc:transparent', '-draw', '"image over 0,0 0,0 \'/path/to/img1.png\'"', '/path/to/out.png']); ls.stderr.on('data', function (data) { console.log('stderr: ' + data); });

如果我运行那个确切的命令（唯一改变的是路径，因为它们是绝对的），我得到了stderr：

"convert: non-conforming drawing primitive definition `image over 0,0 0,0 '/path/to/img1.png'' @ error/draw.c/DrawImage/3145."

根据一些论坛，通常意味着IM无法打开图像，因为路径无效等等...现在奇怪的是，如果我将convert为echo和prepend convert我会得到以下命令：

convert -size 168x45 xc:transparent -draw "image over 0,0 0,0 '/path/to/img1.png'" /path/to/out.png

从bash直接运行时效果很好。

有任何想法吗？

更多信息：

我只是从图像目录中尝试了这个，并删除了路径（所以它的image over ... img1.png ），我得到了同样的错误。以同样的方式运行pwd给了我相应的目录

I'm calling an imagemagick script via node.js and the command is breaking, but I can't figure out why.

A simplified example of exactly what I'm trying to do:

If I run that exact command (the only thing changed are the paths since they're absolute), I get, on stderr:

"convert: non-conforming drawing primitive definition `image over 0,0 0,0 '/path/to/img1.png'' @ error/draw.c/DrawImage/3145."

Which, according to some forums, usually means that IM can't open the image due to having an invalid path, etc... Now the odd thing is that if I change the convert to echo and prepend convert I get the following command:

convert -size 168x45 xc:transparent -draw "image over 0,0 0,0 '/path/to/img1.png'" /path/to/out.png

which works perfectly when run directly from bash.

Any ideas?

more info:

I just tried this from the directory of the image, and removed the path (so it's image over ... img1.png), and I get the same error. running pwd the same way gives me the appropriate directory