Add socket filename prefix as well as suffix

README.md

@@ -501,6 +501,7 @@ config set no_color true
   * `RUBY_DEBUG_HOST` (`host`): TCP/IP remote debugging: host (default: 127.0.0.1)
   * `RUBY_DEBUG_SOCK_PATH` (`sock_path`): UNIX Domain Socket remote debugging: socket path
   * `RUBY_DEBUG_SOCK_DIR` (`sock_dir`): UNIX Domain Socket remote debugging: socket directory
+  * `RUBY_DEBUG_SOCK_PREFIX` (`sock_prefix`): UNIX Domain Socket remote debugging: socket prefix
   * `RUBY_DEBUG_SOCK_SUFFIX` (`sock_suffix`): UNIX Domain Socket remote debugging: socket suffix
   * `RUBY_DEBUG_LOCAL_FS_MAP` (`local_fs_map`): Specify local fs map
   * `RUBY_DEBUG_SKIP_BP` (`skip_bp`): Skip breakpoints if no clients are attached (default: false)

lib/debug/config.rb

@@ -47,6 +47,7 @@ module DEBUGGER__
     sock_path:      ['RUBY_DEBUG_SOCK_PATH',    "REMOTE: UNIX Domain Socket remote debugging: socket path"],
     sock_dir:       ['RUBY_DEBUG_SOCK_DIR',     "REMOTE: UNIX Domain Socket remote debugging: socket directory"],
     sock_suffix:    ['RUBY_DEBUG_SOCK_SUFFIX',  "REMOTE: UNIX Domain Socket remote debugging: socket suffix"],
+    sock_prefix:    ['RUBY_DEBUG_SOCK_PREFIX',  "REMOTE: UNIX Domain Socket remote debugging: socket prefix"],
     local_fs_map:   ['RUBY_DEBUG_LOCAL_FS_MAP', "REMOTE: Specify local fs map", :path_map],
     skip_bp:        ['RUBY_DEBUG_SKIP_BP',      "REMOTE: Skip breakpoints if no clients are attached", :bool, 'false'],
     cookie:         ['RUBY_DEBUG_COOKIE',       "REMOTE: Cookie for negotiation"],
@@ -498,6 +499,9 @@ def self.unix_domain_socket_dir
   def self.create_unix_domain_socket_name_prefix(base_dir = unix_domain_socket_dir)
     user = ENV['USER'] || 'UnknownUser'
     filename = "ruby-debug-#{user}"
+    if !CONFIG[:sock_prefix].nil?
+      filename = "#{CONFIG[:sock_prefix]}-#{filename}"
+    end
     if !CONFIG[:sock_suffix].nil?
       filename += "-#{CONFIG[:sock_suffix]}"
     end