如何实现软链接vimdiff

Question

我发现vimdiff实用程序只是一个指向vim的软链接。这两个文件都位于my Suse11框中的/usr/bin/下。而vimdfiff是vim的软链接。有趣的是，vimdiff file1 file2实际上等同于vim -d file1 file2，所以从这个意义上说，-d选项会自动嵌入到软链接中，所以我的问题很简单:如何实现？

Answer 1

Vim在其main()函数中使用argv[0]来区分其可执行文件名vim或vimdiff等。

执行此检查以区分rvim、rview、gvim、gview、vimdiff、gvimdiff、ex和exim的Link to vim main.c。

/*
 * Check for: [r][e][g][vi|vim|view][diff][ex[im]]
 * If the next character is "e" we run in Easy mode.
 * If the next character is "g" we run the GUI version.
 * If the next characters are "view" we start in readonly mode.
 * If the next characters are "diff" or "vimdiff" we start in diff mode.
 * If the next characters are "ex" we start in Ex mode.  If it's followed
 * by "im" use improved Ex mode.
 */