rename settrans to compton-trans, add manpage.

Makefile

@@ -18,13 +18,15 @@ compton: $(OBJS)
 
 install: compton
 	@install -Dm755 compton "$(DESTDIR)$(BINDIR)"/compton
-	@install -Dm755 bin/settrans "$(DESTDIR)$(BINDIR)"/settrans
+	@install -Dm755 bin/compton-trans "$(DESTDIR)$(BINDIR)"/compton-trans
 	@install -Dm644 man/compton.1 "$(DESTDIR)$(MANDIR)"/compton.1
+	@install -Dm644 man/compton-trans.1 "$(DESTDIR)$(MANDIR)"/compton-trans.1
 
 uninstall:
 	@rm -f "$(DESTDIR)$(BINDIR)/compton"
-	@rm -f "$(DESTDIR)$(BINDIR)/settrans"
+	@rm -f "$(DESTDIR)$(BINDIR)/compton-trans"
 	@rm -f "$(DESTDIR)$(MANDIR)/compton.1"
+	@rm -f "$(DESTDIR)$(MANDIR)/compton-trans.1"
 
 clean:
 	@rm -f $(OBJS) compton

man/compton-trans.1

@@ -0,0 +1,53 @@
+.ds q \N'34'
+.TH compton\-trans 1
+.SH NAME
+compton\-trans \- an opacity setter tool
+.SH SYNOPSIS
+.nf
+.B compton-trans [-wncs] [window] -o [opacity]
+.fi
+.SH DESCRIPTION
+.B compton-trans
+is a bash script that sets _NET_WM_WINDOW_OPACITY only using standard
+command-line utilities for X11, including xprop(1) and xwininfo(1).
+It is similar to other utilities like transset(1) or transset-df(1).
+.SH OPTIONS
+.TP
+.BI \-w\ window\-id
+Specify the window id to target.
+.TP
+.BI \-n\ window\-name
+Specify and try to match a window name.
+.TP
+.BI \-c
+Specify the current window as a target.
+.TP
+.BI \-s
+Select target window with mouse cursor.
+This is the default if no window has been specified.
+.TP
+.BI \-o\ opacity
+Specify the new opacity value for the window. This value
+can be anywhere from 1-100. If it is prefixed with a plus
+or minus (+/-), this will increment or decrement from the
+target window's current opacity instead.
+.SH EXAMPLES
+.TP
+Set window id to opacity of 75%.
+compton-trans -w "$WINDOWID" -o 75
+.TP
+Set window name, "urxvt", to opacity of 75%.
+compton-trans -n "urxvt" -o 75
+.TP
+Set current window to opacity of 75%.
+compton-trans -c -o 75
+.TP
+Select target window and set opacity to 75%.
+compton-trans -s -o 75
+.TP
+Increment current window 5% opacity.
+compton-trans -c -o +5
+.SH BUGS
+Please report any you find to https://github.com/chjj/compton.
+.SH AUTHORS
+Christopher Jeffrey (https://github.com/chjj)