shebangs: fix broken shebangs like #!python

Signed-off-by: botantony <[email protected]>

Author: botantony

Library/Homebrew/language/node.rb

@@ -96,7 +96,7 @@ module Shebang
       module_function
 
       # A regex to match potential shebang permutations.
-      NODE_SHEBANG_REGEX = %r{^#! ?/usr/bin/(?:env )?node( |$)}
+      NODE_SHEBANG_REGEX = %r{^#! ?(?:/usr/bin/(?:env )?)?node( |$)}
 
       # The length of the longest shebang matching `SHEBANG_REGEX`.
       NODE_SHEBANG_MAX_LENGTH = T.let("#! /usr/bin/env node ".length, Integer)

Library/Homebrew/language/perl.rb

@@ -15,7 +15,7 @@ module Shebang
       module_function
 
       # A regex to match potential shebang permutations.
-      PERL_SHEBANG_REGEX = %r{^#! ?/usr/bin/(?:env )?perl( |$)}
+      PERL_SHEBANG_REGEX = %r{^#! ?(?:/usr/bin/(?:env )?)?perl( |$)}
 
       # The length of the longest shebang matching `SHEBANG_REGEX`.
       PERL_SHEBANG_MAX_LENGTH = T.let("#! /usr/bin/env perl ".length, Integer)

Library/Homebrew/language/python.rb

@@ -112,7 +112,7 @@ module Shebang
       module_function
 
       # A regex to match potential shebang permutations.
-      PYTHON_SHEBANG_REGEX = %r{^#! ?/usr/bin/(?:env )?python(?:[23](?:\.\d{1,2})?)?( |$)}
+      PYTHON_SHEBANG_REGEX = %r{^#! ?(?:/usr/bin/(?:env )?)?python(?:[23](?:\.\d{1,2})?)?( |$)}
 
       # The length of the longest shebang matching `SHEBANG_REGEX`.
       PYTHON_SHEBANG_MAX_LENGTH = T.let("#! /usr/bin/env pythonx.yyy ".length, Integer)

Library/Homebrew/test/language/node/shebang_spec.rb

@@ -37,6 +37,7 @@
       #!/usr/bin/env node
       a
       b
+      #!node
       c
     EOS
     file.flush
@@ -53,6 +54,7 @@
         #!#{HOMEBREW_PREFIX/"opt/node@18/bin/node"}
         a
         b
+        #!#{HOMEBREW_PREFIX/"opt/node@18/bin/node"}
         c
       EOS
     end

Library/Homebrew/test/language/perl/shebang_spec.rb

@@ -36,6 +36,7 @@
       #!/usr/bin/env perl
       a
       b
+      #!perl
       c
     EOS
     file.flush
@@ -52,6 +53,7 @@
         #!#{HOMEBREW_PREFIX}/opt/perl/bin/perl
         a
         b
+        #!#{HOMEBREW_PREFIX}/opt/perl/bin/perl
         c
       EOS
     end
@@ -70,6 +72,7 @@
         #!#{expected_shebang}
         a
         b
+        #!#{expected_shebang}
         c
       EOS
     end

Library/Homebrew/test/language/python/shebang_spec.rb

@@ -37,6 +37,7 @@
       #!/usr/bin/python2
       a
       b
+      #!python
       c
     EOS
     file.flush
@@ -55,6 +56,7 @@
         #!#{HOMEBREW_PREFIX}/opt/[email protected]/bin/python3.11
         a
         b
+        #!#{HOMEBREW_PREFIX}/opt/[email protected]/bin/python3.11
         c
       EOS
     end
@@ -68,6 +70,7 @@
         #!/usr/bin/env python3
         a
         b
+        #!/usr/bin/env python3
         c
       EOS
     end