mercurial - How to set "hg diff" output shows in gvim? -

i use mercurial , want see modified change in vim or gvim. there hg diff show modified changes in diff format. want see in vim original version , modified version side-by-side.

i try extdiff in extdiffextension doesn't work , gvim open blank file.

i know there gvim -d localfile otherfile don't know how config mercurial.

check this: using vimdiff view single diffs

hg cat <filename> | vim - -c  ":vert diffsplit <filename>" -c "map q :qa!<cr>";