Added Algol and Algol_nu style (#1090).

5 files changed, 130 insertions, 2 deletions

diff --git a/CHANGES b/CHANGES
index 6a8aceba..5c96ba6f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -15,10 +15,12 @@ Version 2.1
 
   * Emacs Lisp (PR#431)
   * Arduino (PR#442)
+  * Modula-2 with multi-dialect support (#1090)
 
 - Added styles:
 
   * Lovelace (PR#456)
+  * Algol and Algol-nu (#1090)
 
 
 Version 2.0.3
diff --git a/pygments/lexers/modula2.py b/pygments/lexers/modula2.py
index eec913b6..d32bb5bb 100644
--- a/pygments/lexers/modula2.py
+++ b/pygments/lexers/modula2.py
@@ -1564,5 +1564,3 @@ class Modula2Lexer(RegexLexer):
 
             # return result
             yield index, token, value
-
-# end of modula2.py
diff --git a/pygments/styles/__init__.py b/pygments/styles/__init__.py
index 2c69714f..d7a0564a 100644
--- a/pygments/styles/__init__.py
+++ b/pygments/styles/__init__.py
@@ -39,6 +39,8 @@ STYLE_MAP = {
     'paraiso-light': 'paraiso_light::ParaisoLightStyle',
     'paraiso-dark': 'paraiso_dark::ParaisoDarkStyle',
     'lovelace': 'lovelace::LovelaceStyle',
+    'algol':    'algol::AlgolStyle',
+    'algol_nu': 'algol_nu::Algol_NuStyle',
 }
 
 
diff --git a/pygments/styles/algol.py b/pygments/styles/algol.py
new file mode 100644
index 00000000..a8726009
--- /dev/null
+++ b/pygments/styles/algol.py
@@ -0,0 +1,63 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.styles.algol
+    ~~~~~~~~~~~~~~~~~~~~~
+
+    Algol publication style.
+
+    This style renders source code for publication of algorithms in
+    scientific papers and academic texts, where its format is frequently used.
+
+    It is based on the style of the revised Algol-60 language report[1].
+
+    o  No colours, only black, white and shades of grey are used.
+    o  Keywords are rendered in lowercase underline boldface.
+    o  Builtins are rendered in lowercase boldface italic.
+    o  Docstrings and pragmas are rendered in dark grey boldface.
+    o  Library identifiers are rendered in dark grey boldface italic.
+    o  Comments are rendered in grey italic.
+
+    To render keywords without underlining, refer to the `Algol_Nu` style.
+
+    For lowercase conversion of keywords and builtins in languages where
+    these are not or might not be lowercase, a supporting lexer is required.
+    The Algol and Modula-2 lexers automatically convert to lowercase whenever
+    this style is selected.
+
+    [1] `Revised Report on the Algorithmic Language Algol-60 <http://www.masswerk.at/algol60/report.htm>`
+
+    :copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+from pygments.style import Style
+from pygments.token import Keyword, Name, Comment, String, Error, Operator
+
+
+class AlgolStyle(Style):
+
+    background_color = "#ffffff"
+    default_style = ""
+
+    styles = {
+        Comment:                   "italic #888",
+        Comment.Preproc:           "bold noitalic #888",
+        Comment.Special:           "bold noitalic #888",
+
+        Keyword:                   "underline bold",
+        Keyword.Declaration:       "italic",
+
+        Name.Builtin:              "bold italic",
+        Name.Builtin.Pseudo:       "bold italic",
+        Name.Namespace:            "bold italic #666",
+        Name.Class:                "bold italic #666",
+        Name.Function:             "bold italic #666",
+        Name.Variable:             "bold italic #666",
+        Name.Constant:             "bold italic #666",
+
+        Operator.Word:             "bold",
+
+        String:                    "italic #666",
+
+        Error:                     "border:#FF0000"
+    }
diff --git a/pygments/styles/algol_nu.py b/pygments/styles/algol_nu.py
new file mode 100644
index 00000000..392838f2
--- /dev/null
+++ b/pygments/styles/algol_nu.py
@@ -0,0 +1,63 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.styles.algol_nu
+    ~~~~~~~~~~~~~~~~~~~~~~~~
+
+    Algol publication style without underlining of keywords.
+
+    This style renders source code for publication of algorithms in
+    scientific papers and academic texts, where its format is frequently used.
+
+    It is based on the style of the revised Algol-60 language report[1].
+
+    o  No colours, only black, white and shades of grey are used.
+    o  Keywords are rendered in lowercase boldface.
+    o  Builtins are rendered in lowercase boldface italic.
+    o  Docstrings and pragmas are rendered in dark grey boldface.
+    o  Library identifiers are rendered in dark grey boldface italic.
+    o  Comments are rendered in grey italic.
+
+    To render keywords with underlining, refer to the `Algol` style.
+
+    For lowercase conversion of keywords and builtins in languages where
+    these are not or might not be lowercase, a supporting lexer is required.
+    The Algol and Modula-2 lexers automatically convert to lowercase whenever
+    this style is selected.
+
+    [1] `Revised Report on the Algorithmic Language Algol-60 <http://www.masswerk.at/algol60/report.htm>`
+
+    :copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+from pygments.style import Style
+from pygments.token import Keyword, Name, Comment, String, Error, Operator
+
+
+class Algol_NuStyle(Style):
+
+    background_color = "#ffffff"
+    default_style = ""
+
+    styles = {
+        Comment:                   "italic #888",
+        Comment.Preproc:           "bold noitalic #888",
+        Comment.Special:           "bold noitalic #888",
+
+        Keyword:                   "bold",
+        Keyword.Declaration:       "italic",
+
+        Name.Builtin:              "bold italic",
+        Name.Builtin.Pseudo:       "bold italic",
+        Name.Namespace:            "bold italic #666",
+        Name.Class:                "bold italic #666",
+        Name.Function:             "bold italic #666",
+        Name.Variable:             "bold italic #666",
+        Name.Constant:             "bold italic #666",
+
+        Operator.Word:             "bold",
+
+        String:                    "italic #666",
+
+        Error:                     "border:#FF0000"
+    }