/usr/share/epic4/script/tc is in epic4 1:2.10.6-1build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78  | /*
 * ``TC'' - Tabscript Clone For EPIC
 * Copyright 1995 Jeremy Nelson
 * Copyright 1998 The EPIC Project
 * Originally written for Daveman's Toolbox
 * Please use and distribute this script like crazy!
 */
#
# (note from jfn)  The original allowed you to save up to 10 nicks to 
# by cycled through by pressing <tab> or <esc>.  I totaly rewrote the file
# and added the ability to set the number of nicks to save, and also made 
# it a full tabkey clone.  This file is a lot easier to figure out, too.
# 
# What it does:
#     save an arbitrary number of nicks in a list (settable by you)
#     cycle through the list by pressing <tab>
#     cycle backwards through the list by pressing <^R>
#     remove last <TAB>bed nick from the list (^X^X)
#
# Because this script uses a queue instead of a list and index counter, 
# you may find this script has a different set of idiosyncrasies then 
# the original tabscript.
#
package tc
bind ^I parse_command ^tc.get_nick
bind ^R parse_command ^tc.get_nick_backward
bind ^X^X parse_command {
	xecho -b Nickname $word($tc.position $tc.msglist) removed
	@ tc.msglist = notw($tc.position $tc.msglist)
	@ tc.num_nicks = #tc.msglist
	@ tc.position--
	tc.get_nick
}
# maximum number of nicks you want to keep track of...
@ tc.max_nicks = 6
#
# add a word to a list -- makes sure the list doesnt get longer then
# the number allowed in max_nicks.
#
alias tc.add_to_list {
	# This was suggested by David Luyer (david_luyver@pacfici.net.au)
	(tc.msglist = [$0 $leftw(${tc.max_nicks-1} $remw($0 $tc.msglist))])
	(tc.num_nicks = #tc.msglist)
	(tc.position = 0)
}
alias tc.get_nick {
	parsekey erase_line
	xtype -l /msg $word($tc.position $tc.msglist) 
	((++tc.position >= tc.num_nicks) && (tc.position -= tc.num_nicks))
}
alias tc.get_nick_backward {
	parsekey erase_line
	xtype -l /msg $word($tc.position $tc.msglist) 
	((--tc.position < 0) && (tc.position += tc.num_nicks))
}
alias addnick for x in ($*) {tc.add_to_list $x}
alias nicklist xecho -b Nickname list: $tc.msglist
on #-msg -12782 * tc.add_to_list $0
on #-send_msg -12782 * tc.add_to_list $0 
on #-dcc_chat -12782 * tc.add_to_list =$0
on #-send_dcc_chat -12782 * tc.add_to_list =$0
/*
 * This alias doesnt work if you try to do something like:
 * /m x ....
 * because $x expands to your userhost, and that gets confusing.
 *
 * No, the lack of brackets around $0 is not a bug, thats how it works.
 * Try it.  If $0 is 'bc' and $bc is "bigcheese" then 
 * if ($0) -> if (bc) -> if ([bigcheese])
 */
ALIAS M if \($0\) {msg $($0) $1-} {msg $0 $1-}
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