How to use vi to batch match characters and paste after the matched characters

Question

I want to use vi to quickly edit text.

there is the format on lines m to n of the file.

    .lut_da_25,
    .abc_we23,
    ...
    .yy_ewe,

I want to edit the above lines to the following

    .lut_da_25(lut_da_25),
    .adc_we23(adc_we23),
    ...
    .yy_ewe(yy_ewe),

is there a quick method in vi to achieve the above functions?

Answer 1

I think something like

%substitute/\.\(\w\+\)/&(\1)/

Would do it. Assumptions: comma is not a “word” character (?), no more than one record per line.