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Tobin Fricke's Lab Notebook

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TeX input mode [Oct. 16th, 2012|11:35 pm]
Tobin Fricke's Lab Notebook
 [ Tags | emacs, tex, unicode ]

I've often wished for an easier way to enter unicode math symbols, for example by typing the LaTeX code. Instead the only way I know is to google for the symbol, which has got to be most complicated way of entering a symbol.

But I just found out that EMACS has a "TeX input mode", where you just type TeX symbols and they magically turn into unicode symbols.

For example, if you type

\forall x \in R, x^2 \geq 0

you get

∀ x ∈ R, x² ≥ 0

Awesome! If only I could get this input mode system-wide.

Invoke it with M-x set-input-method and then TeX. I found out about this via this stackoverflow answer.

 From: 2012-10-19 01:31 am (UTC) (Link)
This doesn't directly solve your problem, but I've found the following script, which I occasionally hack a bit, useful on the command line for all sorts of things. Piping output from it / something similar / something analogous but TeXy into xsel might get you part of the way?

#!/usr/bin/perl -CA

# Look up Unicode characters, code points, and names
# Originally by Larry Wall.

binmode STDOUT, ":utf8";
my $pat = "@ARGV"; my @pats = map { my$r = qr/$_/i;$r } @ARGV;
if (ord $pat > 256) {$pat = sprintf("%04X", ord $pat); print "That's$pat...\n";
}
elsif (ord $pat > 128) { # arg in sneaky UTF-8$pat = sprintf("%04X", unpack("U0U",$pat)); print "That's$pat...\n";
}

my @names = split /^/, do 'unicore/Name.pl';
for my $n (@names) { if ($n =~ /$pat/io) { printname($n);
} else {
if (@pats == map { $n =~ /$_/ } @pats) {
printname($n); } } } sub printname { local$_ = shift;
chomp;
printf "$_\t[%s]\n", chr hex$_;
}



(Is there no more raw input to lj? I bet this is going to suck...)