Remove space-padding from <pre> blocks

5 files changed, 41 insertions, 41 deletions

diff --git a/prolog/problems/denotational_semantics/algol_3/en.py b/prolog/problems/denotational_semantics/algol_3/en.py
index c5da13e..59a9bd2 100644
--- a/prolog/problems/denotational_semantics/algol_3/en.py
+++ b/prolog/problems/denotational_semantics/algol_3/en.py
@@ -6,28 +6,28 @@ slug = 'interpreter for mini-algol'
 description = '''\
 <p>A DCG for mini-algol.</p>
 <pre>
-  % apply a function to a starting state
-  ?- apply([a=2], Out, fun(_In, Out, eval(a+3, _In, Out))).
-    Out = 5.
+% apply a function to a starting state
+?- apply([a=2], Out, fun(_In, Out, eval(a+3, _In, Out))).
+  Out = 5.
 
-  % a := a+b
-  % b := a-b
-  % a := a-b
-  ?- _Program = [begin,a,:=,a+b,b,:=,a-b,a,:=,a-b,end],
-      algol(_F, _Program, []),
-      apply([a=3,b=5], Output, _F).
-    Output = [a=5,b=3,printout=[]].
+% a := a+b
+% b := a-b
+% a := a-b
+?- _Program = [begin,a,:=,a+b,b,:=,a-b,a,:=,a-b,end],
+    algol(_F, _Program, []),
+    apply([a=3,b=5], Output, _F).
+  Output = [a=5,b=3,printout=[]].
 
-  % a := 0
-  % while a < 10 do
-  % begin
-  %   print(a)
-  %   a := a+1
-  % end
-  ?- _Program = [begin,a,:=,0,while,a,<,10,do,begin,print(a),a,:=,a+1,end,end],
-      algol(_F, _Program, []),
-      apply([a=3], Output, _F).
-    Output = [a=10,printout=[0,1,2,3,4,5,6,7,8,9]].
+% a := 0
+% while a < 10 do
+% begin
+%   print(a)
+%   a := a+1
+% end
+?- _Program = [begin,a,:=,0,while,a,<,10,do,begin,print(a),a,:=,a+1,end,end],
+    algol(_F, _Program, []),
+    apply([a=3], Output, _F).
+  Output = [a=10,printout=[0,1,2,3,4,5,6,7,8,9]].
 </pre>
 '''
 
diff --git a/prolog/problems/denotational_semantics/algol_for_3/en.py b/prolog/problems/denotational_semantics/algol_for_3/en.py
index d4b8144..91ff34d 100644
--- a/prolog/problems/denotational_semantics/algol_for_3/en.py
+++ b/prolog/problems/denotational_semantics/algol_for_3/en.py
@@ -6,14 +6,14 @@ slug = 'interpreter for mini-algol with for-statement'
 description = '''\
 <p>Extend the given DCG for mini-algol to support the for-statement. Example:</p>
 <pre>
-  % for a := 0 & a < 5 & a := a + 1 do
-  % begin
-  %   print(a)
-  % end
-  ?- _Program = [begin,for,a,:=,0,&,a,<,5,&,a,:=,a+1,do,begin,print(a),end,end],
-      algol_for(_F, _Program, []),
-      apply([a=2], Output, _F).
-    Output = [a=5,printout=[0,1,2,3,4]].
+% for a := 0 & a < 5 & a := a + 1 do
+% begin
+%   print(a)
+% end
+?- _Program = [begin,for,a,:=,0,&,a,<,5,&,a,:=,a+1,do,begin,print(a),end,end],
+    algol_for(_F, _Program, []),
+    apply([a=2], Output, _F).
+  Output = [a=5,printout=[0,1,2,3,4]].
 </pre>
 '''
 
diff --git a/prolog/problems/denotational_semantics/algol_if_3/en.py b/prolog/problems/denotational_semantics/algol_if_3/en.py
index fae6c45..66855e5 100644
--- a/prolog/problems/denotational_semantics/algol_if_3/en.py
+++ b/prolog/problems/denotational_semantics/algol_if_3/en.py
@@ -6,15 +6,15 @@ slug = 'interpreter for mini-algol with if-statement'
 description = '''\
 <p>Extend the given DCG for mini-algol to support the if-statement. You can assume that both branches are present in every if-statement. Example:</p>
 <pre>
-  % if a < b then
-  %   print(a)
-  % else
-  %   print(b)
-  % end
-  ?- _Program = [begin,if,a,<,b,then,print(a),else,print(b),end,end],
-      algol_if(_F, _Program, []),
-      apply([a=3,b=5], Output, _F).
-    Output = [a=3,b=5,printout=[3]].
+% if a < b then
+%   print(a)
+% else
+%   print(b)
+% end
+?- _Program = [begin,if,a,<,b,then,print(a),else,print(b),end,end],
+    algol_if(_F, _Program, []),
+    apply([a=3,b=5], Output, _F).
+  Output = [a=3,b=5,printout=[3]].
 </pre>
 '''
 
diff --git a/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py b/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py
index 1c23b18..6a31496 100644
--- a/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py
+++ b/prolog/problems/denotational_semantics/prog_8puzzle_3/en.py
@@ -9,8 +9,8 @@ description = '''\
 <p>The meaning of a word (program) in this language has the form <code>In-->Out</code>, mapping from input to output states. Each state is a (permuted) list of numbers from 0 to 8, where 0 stands for the empty square and other numbers for the corresponding tiles. The first three numbers in the list correspond to the top row of the 8-puzzle, the next three numbers to the middle row, and the last three numbers to the last row. The meaning of instructions <code>left</code>, <code>right</code>, <code>up</code> and <code>down</code> is to move the blank tile in the given direction.</p>
 
 <pre>
-  ?- prog_8puzzle([0,1,2,3,4,5,6,7,8]-->Out, [begin,down,right,end], []).
-    Out = [3,1,2,4,0,5,6,7,8].
+?- prog_8puzzle([0,1,2,3,4,5,6,7,8]-->Out, [begin,down,right,end], []).
+  Out = [3,1,2,4,0,5,6,7,8].
 </pre>
 
 <p>Helper predicates (already defined):<br />
diff --git a/prolog/problems/denotational_semantics/prog_listswap_3/en.py b/prolog/problems/denotational_semantics/prog_listswap_3/en.py
index 5e85ce6..ad9dcf8 100644
--- a/prolog/problems/denotational_semantics/prog_listswap_3/en.py
+++ b/prolog/problems/denotational_semantics/prog_listswap_3/en.py
@@ -9,8 +9,8 @@ description = '''\
 <p>The meaning of a word (program) in this language has the form <code>In-->Out</code>, mapping from input to output lists. Besides the list contents, internal states also hold the current cursor position. The <code>left</code> and <code>right</code> instructions move the cursor one step in the given direction, while the <code>swap</code> instruction swaps the element under the cursor with its left neighbor (and fails if cursor is currently pointing to the first element of the list).</p>
 
 <pre>
-  ?- prog_listswap([1,2,3,4]-->Out, [begin,right,swap,end], []).
-    Out = [2,1,3,4].
+?- prog_listswap([1,2,3,4]-->Out, [begin,right,swap,end], []).
+  Out = [2,1,3,4].
 </pre>
 
 <p>Helper predicate (already defined):<br />