目标

把代码里面选中的字符直接替换为空格。用于复制粘贴的时候，多行代码快速修改。

代码

import os, sublime, sublime_plugin

class ReplaceCharCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        view = self.view
        position = view.sel()[0]
        changestr = view.substr(position)
        newstr = ''
        for c in changestr:
            if c != '\n':
                newstr += ' '
            else:
                newstr += c
        view.replace(edit,position,newstr)

使用示例

纵向编辑代码得到

assign A = DATA[(`B+`C+0) :+ (`A)];
assign B = DATA[(`B+`C+0) :+ (`B)];
assign C = DATA[(`B+`C+0) :+ (`C)];

选中替换后

assign A = DATA[(`B+`C+0) :+ (`A)];
assign B = DATA[(   `C+0) :+ (`B)];
assign C = DATA[(      0) :+ (`C)];