Some VIM configuration variables

The meanings of related variables in some configuration variables of VIM: the abbreviation of the variable name (no) autoindent ai automatic indent means that the new line automatically adds the same indentation as the current line. (No) cindent ci is similar to C language program indentation (no) smartindent si some improved variable name abbreviations Based on autoindent meaning tabstop = X ts when editing how many spaces a TAB character occupies. Shiftwidth = X sw uses the number of spaces Indented by each layer. (No) Whether expandtab (no) et automatically expands the input TAB into spaces. Enter a TAB after enabling. Ctrl-V <TAB> softtabstop = X sts is required to use the backspace key after et is enabled. Each time you exit, X spaces (no) are deleted) when the smarttab (no) sta is enabled, press TAB at the beginning of the line to add sw spaces. Otherwise, add ts spaces.