rename singularity pygments to apptainer

Signed-off-by: Dave Dykstra <[email protected]>

conf.py

@@ -292,9 +292,9 @@
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '.'))
 from sphinx.highlighting import lexers
-from pygments_singularity import SingularityLexer
+from pygments_apptainer import ApptainerLexer
 from pygments_json import JSONLexer
 from replacements import *
-# lexer for Singularity definition files (added here until it is upstreamed into Pygments).
-lexers['singularity'] = SingularityLexer(startinline=True)
+# lexer for Apptainer definition files (added here until it is upstreamed into Pygments).
+lexers['apptainer'] = ApptainerLexer(startinline=True)
 lexers['json'] = JSONLexer(startinline=True)

pygments_singularity.py → pygments_apptainer.py

@@ -3,15 +3,15 @@
 from pygments.lexers.shell import BashLexer
 import re
 
-class SingularityLexer(RegexLexer):
+class ApptainerLexer(RegexLexer):
     """
-    Lexer for `Singularity definition files
+    Lexer for `Apptainer definition files
     <https://www.sylabs.io/guides/3.0/user-guide/definition_files.html>`_.
     """
 
-    name = 'Singularity'
-    aliases = ['singularity']
-    filenames = ['*.def', 'Singularity']
+    name = 'Apptainer'
+    aliases = ['apptainer']
+    filenames = ['*.def', 'Apptainer']
     flags = re.IGNORECASE | re.MULTILINE | re.DOTALL
 
     _headers = r'^(\s)*(bootstrap|from|osversion|mirrorurl|include|registry|namespace|includecmd|fingerprints)(:)'