[basic] Whitespace fixes around punctuators

Author: tkoeppe

source/basic.tex

@@ -156,7 +156,7 @@
 \begin{codeblock}
 int a;                          // defines \tcode{a}
 extern const int c = 1;         // defines \tcode{c}
-int f(int x) { return x+a; }    // defines \tcode{f} and defines \tcode{x}
+int f(int x) { return x + a; }  // defines \tcode{f} and defines \tcode{x}
 struct S { int a; int b; };     // defines \tcode{S}, \tcode{S::a}, and \tcode{S::b}
 struct X {                      // defines \tcode{X}
   int x;                        // defines non-static data member \tcode{x}
@@ -802,13 +802,13 @@
   int j();
   void q();
 }
-namespace { int l=1; }
+namespace { int l = 1; }
 // the potential scope of \tcode{l} is from its point of declaration
 // to the end of the translation unit
 
 namespace N {
   int g(char a) {   // overloads \tcode{N::g(int)}
-    return l+a;     // \tcode{l} is from unnamed namespace
+    return l + a;   // \tcode{l} is from unnamed namespace
   }
 
   int i;            // error: duplicate definition
@@ -991,7 +991,7 @@
 
 \begin{codeblock}
 typedef int N;
-template<N X, typename N, template<N Y> class T> struct A;
+template<N X, class N, template<N Y> class T> struct A;
 \end{codeblock}
 
 Here, \tcode{X} is a non-type template parameter of type \tcode{int} and \tcode{Y} is a