diff --git a/autoload/tbone.vim b/autoload/tbone.vim
index 0545125..ecef058 100644
--- a/autoload/tbone.vim
+++ b/autoload/tbone.vim
@@ -332,10 +332,18 @@ function! tbone#write_command(bang, line1, line2, count, ...) abort
     return 'echoerr '.string('Target pane required')
   endif
 
-  let keys = join(map(
-        \ getline(a:line1, a:line2),
-        \ 'substitute(v:val,"^\\s*","","")'),
-        \ "\r")
+  if a:bang
+      let keys = join(map(
+            \ getline(a:line1, a:line2),
+            \ 'v:val'),
+            \ "\r")
+  else
+      let keys = join(map(
+            \ getline(a:line1, a:line2),
+            \ 'substitute(v:val,"^\\s*","","")'),
+            \ "\r")
+  endif
+
   if a:count > 0
     let keys = get(g:, 'tbone_write_initialization', '').keys."\r"
   endif
diff --git a/doc/tbone.txt b/doc/tbone.txt
index b2514d3..eb99604 100644
--- a/doc/tbone.txt
+++ b/doc/tbone.txt
@@ -9,30 +9,31 @@ COMMANDS                                        *tbone*
 These commands will be available if and only if tmux is in your PATH.
 
                                                 *tbone-:Tmux*
-:Tmux [args]            Invoke an arbitrary tmux command.
+:Tmux [args]               Invoke an arbitrary tmux command.
 
                                                 *tbone-:Tput*
-:[line]Tput [buffer]    Put the text from the given tmux buffer (default most
-                        recent) after [line] (default current line).
+:[line]Tput [buffer]       Put the text from the given tmux buffer (default
+                           most recent) after [line] (default current line).
 
                                                 *tbone-:Tyank*
-:[range]Tyank [buffer]  Yank [range] lines into the given tmux buffer (default
-                        new).
+:[range]Tyank [buffer]     Yank [range] lines into the given tmux buffer
+                           (default new).
 
                                                 *tbone-:Twrite*
-:[range]Twrite [pane]   Take the text indicated by [range], strip leading
-                        whitespace, change newlines to carriage returns, and
-                        stuff it into [pane] using `tmux send-keys` (default
-                        previously specified).
+:[range]Twrite[!] [pane]   Take the text indicated by [range], strip leading
+                           whitespace, change newlines to carriage returns,
+                           and stuff it into [pane] using `tmux send-keys`.
+                           To preserve leading whitespace, use a "!".
+                           (default previously specified).
 
-:Twrite [pane]          With no range, sends the current line without a
-                        trailing carriage return.
+:Twrite [pane]             With no range, sends the current line without a
+                           trailing carriage return.
 
                                                 *tbone-:Tattach*
-:Tattach {session}      Force use of a particular tmux session.  You only need
-                        this if you started Vim outside of tmux.
+:Tattach {session}         Force use of a particular tmux session.  You only
+                           need this if you started Vim outside of tmux.
 
-:Tattach                Revert back to the default tmux session.  You might
-                        think of this as "detaching".
+:Tattach                   Revert back to the default tmux session.  You might
+                           think of this as "detaching".
 
  vim:tw=78:et:ft=help:norl: