Fix some typos found by codespell

Author: fingolfin

CHANGELOG.md

@@ -310,8 +310,8 @@ This is a minor release that fixes several bugs:
 This is a minor release of the Digraphs package.  The main change in this
 release is the reintroduction of the three-argument version of
 `DigraphAddVertices`, which accepts a digraph, a number of vertices to add, and
-a list of labels for the new vertices.  The removal inadvertantly broke
-backwards compatbility with some third-party pre-existing code that relied on
+a list of labels for the new vertices.  The removal inadvertently broke
+backwards compatibility with some third-party pre-existing code that relied on
 this functionality in the Digraphs package (see
 [Issue #264](https://github.com/digraphs/Digraphs/issues/264)).
 

doc/constructors.xml

@@ -41,7 +41,7 @@ gap> LineDigraph(ChainDigraph(3));
   <Description>
     Given a symmetric digraph <A>digraph</A>, the operation returns the
     symmetric digraph obtained by associating a vertex with each edge of
-    <A>digraph</A>, ignoring directions and multiplicites, and adding an edge
+    <A>digraph</A>, ignoring directions and multiplicities, and adding an edge
     between two vertices if and only if the corresponding edges have a vertex in
     common.<P/>
 
@@ -67,7 +67,7 @@ gap> LineUndirectedDigraph(DigraphSymmetricClosure(ChainDigraph(3)));
     the double digraph is the original vertex set together with a duplicate. The
     edges are <C>[u_1, v_2]</C> and <C>[u_2, v_1]</C> if and only if <C>[u,
       v]</C> is an edge in <A>digraph</A>. The resulting graph is bipartite,
-    since the orignal edges are not included in the resulting digraph.<P/>
+    since the original edges are not included in the resulting digraph.<P/>
 
     If <A>digraph</A> is mutable, then <A>digraph</A> is modified in-place. If
     <A>digraph</A> is immutable, then a new immutable digraph constructed as
@@ -89,7 +89,7 @@ gap> BipartiteDoubleDigraph(gamma);
   <Description>
     Let <A>digraph</A> be a digraph with vertex set <C>V</C>. This function
     returns the double digraph of <A>digraph</A>. The vertex set of the double
-    digraph is the orginal vertex set together with a duplicate. The edges are
+    digraph is the original vertex set together with a duplicate. The edges are
     <C>[u_1, v_2]</C> and <C>[u_2, v_1]</C> if and only if <C>[u, v]</C> is an
     edge in <A>digraph</A>, together with the original edges and their
     duplicates.<P/>

doc/display.xml

@@ -563,7 +563,7 @@ gap> FileString("dot/preset.dot", DotProrderDigraph(gr));
     <Oper Name="DotHighlightedDigraph" Arg="digraph, verts [, colour1, colour2]"/>
     <Returns>A string.</Returns>
     <Description>
-      <C>DotHighlightedDigraph</C> produces a graphical represenation of the
+      <C>DotHighlightedDigraph</C> produces a graphical representation of the
       digraph <A>digraph</A>, where the vertices in the list <A>verts</A>, and
       edges between them, are drawn with colour <A>colour1</A> and all other
       vertices and edges in <A>digraph</A> are drawn with colour <A>colour2</A>.

doc/isomorph.xml

@@ -43,9 +43,9 @@
 <ManSection>
   <Attr Name="BlissAutomorphismGroup" Arg="digraph" Label="for a digraph"/>
   <Oper Name="BlissAutomorphismGroup" Arg="digraph, vertex_colours" 
-    Label="for a digraph and homogenous list"/>
+    Label="for a digraph and homogeneous list"/>
   <Oper Name="BlissAutomorphismGroup" Arg="digraph, vertex_colours, edge_colours" 
-    Label="for a digraph, homogenous list, and list"/>
+    Label="for a digraph, homogeneous list, and list"/>
   <Returns>A permutation group.</Returns>
   <Description>
     If <A>digraph</A> is a digraph, then this attribute contains the group of
@@ -210,7 +210,7 @@ true]]></Example>
     and Petteri Kaski. If &NautyTracesInterface; is available, then &nauty; by
     Brendan Mckay and Adolfo Piperno can be used instead; see
     <Ref Attr="BlissAutomorphismGroup"
-      Label="for a digraph and homogenous list"/>,
+      Label="for a digraph and homogeneous list"/>,
     <Ref Attr="NautyAutomorphismGroup"/>, <Ref Func="DigraphsUseBliss"/>,
     and <Ref Func="DigraphsUseNauty"/>.
 
@@ -298,7 +298,7 @@ true]]></Example>
     and Petteri Kaski. If &NautyTracesInterface; is available, then &nauty; by
     Brendan Mckay and Adolfo Piperno can be used instead; see
      <Ref Attr="BlissAutomorphismGroup"
-       Label="for a digraph, homogenous list, and list"/>,
+       Label="for a digraph, homogeneous list, and list"/>,
      <Ref Attr="NautyAutomorphismGroup"/>, <Ref Func="DigraphsUseBliss"/>, and
      <Ref Func="DigraphsUseNauty"/>.
 

doc/oper.xml

@@ -791,7 +791,7 @@ gap> InDegreeOfVertex(D, 4);
 <ManSection>
   <Oper Name="InNeighboursOfVertex" Arg="digraph, vertex"/>
   <Oper Name="InNeighborsOfVertex" Arg="digraph, vertex"/>
-  <Returns>A list of postitive vertices.</Returns>
+  <Returns>A list of positive vertices.</Returns>
   <Description>
 
     This operation returns the list <C>inn</C> of vertices of the digraph
@@ -991,7 +991,7 @@ false
     <A>func</A>, <A>nopath</A>, and <A>edge</A>.
     The arguments <A>nopath</A> and <A>edge</A> can be arbitrary &GAP; objects.
     The argument <A>func</A> must be a function which accepts 4 arguments:
-    the matrix <C>mat</C>, followed by 3 postive integers. The function
+    the matrix <C>mat</C>, followed by 3 positive integers. The function
     <A>func</A> is where the work to calculate the desired outcome must be
     performed. <P/>
 
@@ -1577,7 +1577,7 @@ gap> DigraphRandomWalk(D, 1, 4);
     to the vertex <A>v</A>.
     <P/>
 
-    See <Ref Oper="DigraphPath"/> for more information about the repesentation
+    See <Ref Oper="DigraphPath"/> for more information about the representation
     of a directed path or directed cycle which is used, and see <Ref
       Sect="Iterators" BookName="ref"/> for more information about iterators.
     See Section <Ref Subsect="Definitions" Style="Text"/> for the definition of

doc/prop.xml

@@ -1341,7 +1341,7 @@ false]]></Example>
   <Prop Name="IsQuasiorderDigraph" Arg="digraph"/>
   <Returns><K>true</K> or <K>false</K>.</Returns>
   <Description>
-    A digraph is a preorder digraph if and only if the digraph satisifies both
+    A digraph is a preorder digraph if and only if the digraph satisfies both
     <Ref Prop="IsReflexiveDigraph"/> and <Ref Prop="IsTransitiveDigraph"/>.
     A preorder digraph (or quasiorder digraph) <A>digraph</A> corresponds to
     the preorder relation <M>\leq</M> defined by <M>x \leq y</M> if and only
@@ -1377,7 +1377,7 @@ false
   <Prop Name="IsPartialOrderDigraph" Arg="digraph"/>
   <Returns><K>true</K> or <K>false</K>.</Returns>
   <Description>
-    A digraph is a partial order digraph if and only if the digraph satisifies
+    A digraph is a partial order digraph if and only if the digraph satisfies
     all of <Ref Prop="IsReflexiveDigraph"/>,
     <Ref Prop="IsAntisymmetricDigraph"/> and <Ref Prop="IsTransitiveDigraph"/>.
     A partial order <A>digraph</A> corresponds
@@ -1410,7 +1410,7 @@ true
   <Prop Name="IsEquivalenceDigraph" Arg="digraph"/>
   <Returns><K>true</K> or <K>false</K>.</Returns>
   <Description>
-    A digraph is an equivalence digraph if and only if the digraph satisifies
+    A digraph is an equivalence digraph if and only if the digraph satisfies
     all of <Ref Prop="IsReflexiveDigraph"/>,
     <Ref Prop="IsSymmetricDigraph"/> and <Ref Prop="IsTransitiveDigraph"/>.
     A partial order <A>digraph</A> corresponds to an equivalence relation.

doc/z-chap9.xml

@@ -17,7 +17,7 @@
       <Item>
 	<E> Graph6 </E> is a graph data format for storing undirected graphs
 	with no multiple edges nor loops of size up to <M> 2^{36} - 1 </M> in
-	printable chracters. The format consists of two parts. The first part
+	printable characters. The format consists of two parts. The first part
 	uses one to eight bytes to store the number of vertices. And the second
 	part is the upper half of the adjacency matrix converted into ASCII
 	characters. For a more detail description see <URL Text='Graph6'>
@@ -52,7 +52,7 @@
 	designed for digraphs. In this format the list of edges is
 	partitioned into inceasing and decreasing edges, depending whether the
 	edge has its source bigger than the range. Then both sets of edges are
-	written separetly in <E> Sparse6 </E> format with a separation symbol
+	written separately in <E> Sparse6 </E> format with a separation symbol
 	in between.
       </Item>
     </List>

gap/attr.gi

@@ -302,7 +302,7 @@ function(D)
     od;
     return index;
   end;
-  # Iterate over vetex subsets
+  # Iterate over vertex subsets
   subset_iter := IteratorOfCombinations(vertices);
   # Skip the first one, which should be the empty set
   S := NextIterator(subset_iter);
@@ -345,7 +345,7 @@ function(D)
     # Undo the changes made.
     UniteBlist(vertex_blist, I);
   od;
-  # Iterate over vetex subset blists.
+  # Iterate over vertex subset blists.
   subset_iter := ListWithIdenticalEntries(n, [true, false]);
   subset_iter := IteratorOfCartesianProduct2(subset_iter);
   # Skip the first one, which should be the empty set

gap/digraph.gi

@@ -1166,7 +1166,7 @@ function(filt, D)
   red := DigraphReflexiveTransitiveReduction(D);
   top := DigraphTopologicalSort(D);
   # im[i] will store the image of the idempotent partial perm corresponding to
-  # vertex i of the arugment <D>
+  # vertex i of the argument <D>
   im         := [];
   im[top[1]] := [];
   max        := 1;

gap/grahom.gi

@@ -31,7 +31,7 @@ function(arg)
       colours := fail;
       G := AutomorphismGroup(DigraphRemoveAllMultipleEdges(D));
     else
-      ErrorNoReturn("the 2nd argument must be a homogenous list,");
+      ErrorNoReturn("the 2nd argument must be a homogeneous list,");
     fi;
   else
     if HasGeneratorsOfEndomorphismMonoidAttr(D) then