Add frame around code blocks in latex

src/lib/latex.rs

@@ -333,9 +333,13 @@ impl<'a> Renderer for LatexRenderer<'a> {
             }
             Token::CodeBlock(ref language, ref vec) => {
                 self.escape = false;
-                let res = self.render_vec(vec)?;
+                let mut res = self.render_vec(vec)?;
+                // Remove trailing newline
+                if res.ends_with('\n') {
+                    res.pop();
+                }
                 self.escape = true;
-                let mut res = if self.book.options.get_str("rendering.highlight").unwrap() == "syntect" {
+                res = if self.book.options.get_str("rendering.highlight").unwrap() == "syntect" {
                     self.syntax.to_tex(&res, language)
                 } else {
                     format!("\\begin{{spverbatim}}
@@ -343,8 +347,9 @@ impl<'a> Renderer for LatexRenderer<'a> {
 \\end{{spverbatim}}",
                             code = res)
                 };
-                res.push_str("\n\n");
-//                res.push_str("{\\vspace{1em}}\n");
+                res = format!("\\begin{{mdframed}}
+{}
+\\end{{mdframed}}", res);
                 Ok(res)
             }
             Token::Rule => Ok(String::from("\\HRule\n")),

src/lib/syntax.rs

@@ -65,7 +65,7 @@ impl Syntax {
         for (style, text) in regions.into_iter() {
             let mut content = escape::tex(text).into_owned();
             content = content.replace('\n', "\\\\\n")
-                .replace(' ', "\\hphantom{ }");
+                .replace(' ', "\\hphantom{ }\\allowbreak{}");
             content = format!("\\texttt{{{}}}", content);
             if style.foreground != BLACK {
                 let r = style.foreground.r as f32 / 255.0;
@@ -88,11 +88,7 @@ impl Syntax {
             }
             result.push_str(&content);
         }
-        format!("{{\\vspace{{1em}}}}
-\\begin{{sloppypar}}
-{{\\setlength{{\\parindent}}{{0cm}}{}}}
-\\end{{sloppypar}}",
-                result)
+        format!("{{\\sloppy {}}}", result)
     }
 }
 

templates/latex/template.tex

@@ -11,10 +11,11 @@
 \usepackage[<<&tex_lang>>]{babel}
 
 \usepackage{fancyhdr}
-\usepackage{spverbatim}
 \usepackage{booktabs}
+\usepackage{spverbatim}
 \usepackage{graphicx}
 \usepackage{color}
+\usepackage{mdframed}
 <<#initials>> % only if use_initials is set to true
 \usepackage{lettrine}
 <</initials>>
@@ -25,7 +26,6 @@
 \usepackage[anythingbreaks]{breakurl}
 <</xelatex>>
 
-% TODO: provide a way to configure
 \usepackage[<<&papersize>>, top=2cm, bottom=1.5cm,
   <<#book>> left=2.5cm,right=1.5cm<</book>><<^book>> left=2cm,right=2cm<</book>>]{geometry}%A5 by default