在 Vim 中将缓冲区管道传输到外部命令

Question

我想将当前缓冲区的内容发送到外部命令（如邮件）的标准输入。

如何将 Vim 缓冲区发送到外部命令？

Answer 1

您可以使用 :w !cmd 将当前缓冲区写入外部命令的标准输入。来自 :help :w_c：

                                                        :w_c :write_c
:[range]w[rite] [++opt] !{cmd}
                        Execute {cmd} with [range] lines as standard input
                        (note the space in front of the '!').  {cmd} is
                        executed like with ":!{cmd}", any '!' is replaced with
                        the previous command :!.

相关命令是 :%!cmd ，它执行相同的操作，然后用命令的输出替换当前缓冲区。因此 :%!sort 将调用外部排序命令对当前缓冲区进行就地排序。来自 :help :range!:

:{range}![!]{filter} [!][arg]                           :range!
                        Filter {range} lines through the external program
                        {filter}.  Vim replaces the optional bangs with the
                        latest given command and appends the optional [arg].
                        Vim saves the output of the filter command in a
                        temporary file and then reads the file into the buffer
                        tempfile.  Vim uses the 'shellredir' option to
                        redirect the filter output to the temporary file.
                        However, if the 'shelltemp' option is off then pipes
                        are used when possible (on Unix).
                        When the 'R' flag is included in 'cpoptions' marks in
                        the filtered lines are deleted, unless the
                        :keepmarks command is used.  Example: 
                                :keepmarks '<,'>!sort
                        When the number of lines after filtering is less than
                        before, marks in the missing lines are deleted anyway.

Answer 2

以下是如何从命令行将当前缓冲区发送到外部标准输入的示例：

vim -es +"w >> /dev/stdout" -cq! /etc/hosts

它对于编写脚本很有用。

有关更多命令行技巧，请检查：

• 如何从命令行将整个缓冲区写入标准输出？