Vim read mode
如果是修改系统配置文件,sudo后环境变量改变,不会加载用户配置。而只需要查看文件而非修改时,这个属性可以保证文件不会弄乱。修改自己的只读文件的情况几乎遇不到。
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" for test
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" let g:rainbow_active = 1
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" vim read mode
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" autocmd BufRead * let &l:modifiable = !&readonly
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