Here is one I had in my 'Borrowed Code' folder
;;; rt.LSP Version 3.0 - 01 MAR 1998
;;;
;;; Copyright 1998 by R.K. McSwain
;;; Additional functionality added by A. Henderson ©2002
;;; Permission to use, copy, modify, and distribute this software for
;;; any purpose and without fee is hereby granted, provided that the
;;; above copyright notice appears in all copies and that both the
;;; copyright notice and the limited warranty and restricted rights
;;; notice below appear in all supporting documentation.
;;;
;;; R.K. McSwain provides this program "AS IS" and with all faults.
;;; R.K. McSwain specifically disclaims any implied warranty of
;;; merchantability or fitness for a particular use. autodesk, inc.
;;; does not warrant that the operation of the program will be
;;; uninterrupted or error free.
;;; This program will match text angle to a line angle selected
;;; Added July 2002
;;; Option to move Text from original position to the selected point
;;; on the line
;;; Works with Dtext left justified
;;;--------------------------------------------------------------------
(defun c:MRT (/ ANG ANG1 ANG2 BOB COSROT ENTTYP ENTTYP2 GETIT L1 NANG OANG
OANGPRT OLDORTHO OLDOSMODE P0 P1 P2 PT1 SINROT SL ST T1 TEXTOBJX
TIME TIME2 TX1 WAIT WAIT2 WHY X1 X2 MoveIt)
;;; first get your settings !
(setq oldortho (getvar "orthomode")
oldosmode (getvar "osmode")
) ;_ end of setq
;;; then turn everything off
(setvar "orthomode" 0)
(setvar "osmode" 0)
(setvar "cmdecho" 1)
;;;finds the angle of the line
(setq wait "T")
(while wait
(setq time "T")
(while time
(setq sl (entsel "\n Pick Angle To Match:"))
(setq Pt1 (osnap (cadr sl) "nea")) ; get "nearest" point on line picked
(if (/= sl nil)
(setq time nil)
) ;_ end of if
) ;_ end of while
(setq l1 (entget (car sl))
enttyp (cdr (assoc 0 l1))
) ;_ end of setq
(if (= enttyp "LINE")
(setq wait nil)
) ;_ end of if
) ;_ end of while
(setq p1 (cdr (assoc 10 l1))
x1 (car p1)
p2 (cdr (assoc 11 l1))
x2 (car p2)
) ;_ end of setq
(setq why (angle p1 p2))
(if (>= why 0)
(setq ang1 why)
) ;_ end of if
(if (> why 1.5708) ;same as 90°
(setq ang1 (+ 3.14159 why)) ;add 180°
) ;_ end of if
(if (>= why 4.71413) ;same as 270.1°
(setq ang1 why)
) ;_ end of if
;;;finds angle of txt
(setq wait2 "T")
(while wait2
(setq time2 "T")
(while time2
(setq st (entsel "\n Pick Text To Change:"))
(if (/= st nil)
(setq time2 nil)
) ;_ end of if
) ;_ end of while
(setq tx1 (entget (car st))
enttyp2 (cdr (assoc 0 tx1))
) ;_ end of setq
(if (= enttyp2 "TEXT")
(setq wait2 nil)
) ;_ end of if
) ;_ end of while
(setq ang2 (cdr (assoc 50 tx1))
oang (cons 50 ang2)
nang (cons 50 ang1)
tx1 (subst nang oang tx1)
) ;_ end of setq
(entmod tx1)
(terpri)
(setq bob "T")
(while bob
(initget 6 "M m")
(setq getit (getkword "\n Press M to rotate 180° or <ENTER> to quit "))
(if (or (= getit "m") (= getit "M"))
(progn
(setq oang (assoc 50 tx1)
oangprt (cdr oang)
nang (cons 50 (+ 3.14159 oangprt))
tx1 (subst nang oang tx1)
) ;_ end of setq
(entmod tx1)
) ;_ end of progn
(setq bob nil)
) ;_ end of if
) ;_ end of while
;;;********** Finds the "textbox" boundary of the new text position
;;;********** & sets "move" position to lower left corner
(setq TextobjX st)
(setq p0 (cdr (assoc 10 tx1))
ang (cdr (assoc 50 tx1))
sinrot (sin ang)
cosrot (cos ang)
t1 (car (textbox tx1))
p1 (list
(+ (car p0)
(- (* (car t1) cosrot) (* (cadr t1) sinrot))
) ;_ end of +
(+ (cadr p0)
(+ (* (car t1) sinrot) (* (cadr t1) cosrot))
) ;_ end of +
) ;_ end of list
) ;_ end of setq
;;;********** Do you want to move it or not ?
(initget "Y N")
(setq MoveIt (getkword "\Do you wish to move the selected text [Yes/No] <Y> ?"))
(if (= MoveIt "N")
(command)
(command "move" st "" p1 pt1)
) ;_ end of if
;;;**********
;;; & then restore them !
(setvar "cmdecho" 0)
(setvar "orthomode" Oldortho)
(setvar "osmode" oldosmode)
(princ)
) ;_ end of defun
