my $tex = $config{teximg_prefix};
$tex .= '\['.$code.'\]';
$tex .= $config{teximg_postfix};
- $tex =~ s!\\documentclass{article}!\\documentclass[${height}pt]{article}!g;
- $tex =~ s!\\documentclass{scrartcl}!\\documentclass[${height}pt]{scrartcl}!g;
+ $tex =~ s!\\documentclass\{article}!\\documentclass[${height}pt]{article}!g;
+ $tex =~ s!\\documentclass\{scrartcl}!\\documentclass[${height}pt]{scrartcl}!g;
my $tmp = eval { create_tmp_dir($digest) };
if (! $@ &&