Enable math characters in vector (node) names for command fourier
Replace ft_getpnames() by ft_getpnames_quotes().
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@ -90,7 +90,7 @@ fourier(wordlist *wl, struct plot *current_plot)
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nphase = TMALLOC(double, nfreqs);
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wl = wl->wl_next;
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names = ft_getpnames(wl, TRUE);
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names = ft_getpnames_quotes(wl, TRUE);
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for (pn = names; pn; pn = pn->pn_next) {
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vec = ft_evaluate(pn);
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for (; vec; vec = vec->v_link2) {
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