Vimscript insert after cursor

Question

I am aware of the startinsert command which switch to insert mode as if the i key was pressed. With the ! it behaves like A.

Do you know if there is some kind of option to go to insert mode like we press the a key?

Answer 1

Here is a workaround with manually detecting if the cursor is at the end of the line :

if col('.') == col('$') - 1
    startinsert! " `A`
else
    normal l     " `l`
    startinsert  " `i`
end

col('$') is the last column + 1 so if the cursor is at the end of the line we must substract 1.

reference : https://stackoverflow.com/a/19544043/2558252 (thanks to the robert-audi comment)