command.vim: change g: semantics

instead of starting a command around a text object, repeat the last
ranged command around that text object.

So one can now do something like

vip:sort<cr>

to sort the current paragraph, and then that command can be repeated
on a different paragraph with g:ip, and then the command is
dot-repeatable.

1 files changed, 45 insertions, 6 deletions

diff --git a/plugin/command.vim b/plugin/command.vim
index db18cf3..4101307 100644
--- a/plugin/command.vim
+++ b/plugin/command.vim
@@ -1,14 +1,53 @@
-" g: is a command to run a vim command around a text object.
+" g: last command operator. 
 "
-" For example, to do a substitution inside the current block, one can do:
+" Runs the last command over the given text object.
 "
-" g:iBs/foo/bar/g<cr>
+" By "last command" I mean the last command run with a range. This avoids all those pesky :w and :e
+" commands.
+"
+" so now to join all lines in a text object one could do something like:
+"
+" vap:join<cr>
+"
+" now this command can be repeated around a different text object using g:, for example g:ab
+"
+" what's more is after using g:, it is dot-repeatable.
+"
+" Note that while this is powerful, it wil only work on line-style selections as that it a
+" limitation of ex commands.
 
 noremap <silent> g: :set operatorfunc=<SID>do_command_around<cr>g@
+noremap <silent> g:: :set operatorfunc=<SID>do_command_around<cr>g@_
+
+function! s:find_cmd() abort
+  let match_mark = "\\('.\\)\\?[0-9\\-+^$.%]*"
+
+  let i = -1
+  while 1 
+    let ocmd = histget(':', i)
+
+    " Strip the leading range
+    let ncmd = substitute(ocmd, printf('\(%s\)\(,\(%s\)\)\?', match_mark, match_mark), "", "")
+
+    if ncmd != ocmd
+      " If this command had a range, use that one.
+      let cmd = ncmd
+      break
+    endif
+
+    let i -= 1
+  endwhile
+
+  return cmd
+endfunction
 
 function! s:do_command_around(str) abort
-  let [_, lnum0, _, _] = getpos("'[")
-  let [_, lnum1, _, _] = getpos("']")
+  call setpos("'<", getpos("'["))
+  call setpos("'>", getpos("']"))
+
+  let cmd = s:find_cmd()
+
 
-  call feedkeys(printf(":silent! %d,%d ", lnum0, lnum1))
+  echo printf("'<,'>%s", cmd)
+  exec printf("'<,'>%s", cmd)
 endfunction