macro bug?

[Arun P. <ape...@lb...>]

Hi

not sure if this is a bug or not...

the following works:

gnuplot> set macros
gnuplot> A="a=1"
gnuplot> a=1.0
gnuplot> A=sprintf("a=%f",2)
gnuplot> @A
gnuplot> print a
2.0

but this doesn't:

gnuplot> set macros
gnuplot> A="a=1.111";a=1;A=sprintf("a=%f",2);  @A;print a
         warning: A is not a string variable
1


I also ran into something similar, here is a short version of it:

set macros
A="2.0"
f(t) = (\
         A= sprintf("a=2.0"),\
         @A,\
         "some text")

print f(1)

that didn't set a to 2.0...

An here a longer: What I wanted to do is having a function that saves
results from a fit to some variables, so that I can reuse them later
after doing more fits... I thought I could use:

CP_FIT(A,A_err,mu,mu_err,sig,sig_err,offset,offset_err,file,type) = ( \
       MA    = sprintf("%s_%s_A       = %f",file,type,A),\
       MAe   = sprintf("%s_%s_A_err   = %f",file,type,A_err),\
       Mmu   = sprintf("%s_%s_mu      = %f",file,type,mu),\
       Mmue  = sprintf("%s_%s_mu_err  = %f",file,type,mu_err),\
       Msig  = sprintf("%s_%s_sig     = %f",file,type,sig),\
       Msige = sprintf("%s_%s_sig_err = %f",file,type,sig_err),\
       Moff  = sprintf("%s_%s_off     = %f",file,type,offset),\
       Moffe = sprintf("%s_%s_off_err = %f",file,type,offset_err),\
       @MA, @Mmu, @Msig, @MAe, @Mmue, @Msige,@Moff,@Moffe,\
       sprintf("copying variables for %s %s",file,type))

but the macros never got called ?! It works though, if I take the line
including all the @M... out and call it by hand after I call CP_FIT.

Tested this with 4.4, 4.5 and the latest CVS (Changelog version 1.3682).
Here is the version output from the CVS build:
gnuplot> show version long

	G N U P L O T
	Version 4.5 patchlevel 0
	last modified March 2011
	System: Linux 2.6.38-18-desktop

	Copyright (C) 1986-1993, 1998, 2004, 2007-2010
	Thomas Williams, Colin Kelley and many others

	gnuplot home:     http://www.gnuplot.info
	mailing list:     gnu...@li...
	faq, bugs, etc:   type "help seeking-assistance"
	immediate help:   type "help"
	plot window:      hit 'h'
Compile options:
-READLINE  +LIBREADLINE  +HISTORY
-BACKWARDS_COMPATIBILITY  +BINARY_DATA
+GD_PNG  +GD_JPEG  +GD_TTF  +GD_GIF  +ANIMATION
-NOCWDRC  +X11  +X11_POLYGON  +MULTIBYTE  +X11_EXTERNAL +USE_MOUSE
+HIDDEN3D_QUADTREE
+DATASTRINGS  +HISTOGRAMS  +OBJECTS  +STRINGVARS  +MACROS  +IMAGE
+USER_LINETYPES

GNUPLOT_DRIVER_DIR = "/usr/local/libexec/gnuplot/4.5"
GNUPLOT_PS_DIR     = "/usr/local/share/gnuplot/4.5/PostScript"
HELPFILE           = "/usr/local/share/gnuplot/4.5/gnuplot.gih"

cheers

ARUN