fix: allow border to be a table

Closes #398

Author: Saghen

lua/blink/cmp/config/completion/documentation.lua

@@ -59,7 +59,7 @@ function documentation.validate(config)
     min_width = { config.window.min_width, 'number' },
     max_width = { config.window.max_width, 'number' },
     max_height = { config.window.max_height, 'number' },
-    border = { config.window.border, 'string' },
+    border = { config.window.border, { 'string', 'table' } },
     winblend = { config.window.winblend, 'number' },
     winhighlight = { config.window.winhighlight, 'string' },
     scrollbar = { config.window.scrollbar, 'boolean' },

lua/blink/cmp/config/completion/menu.lua

@@ -106,7 +106,7 @@ function window.validate(config)
     enabled = { config.enabled, 'boolean' },
     min_width = { config.min_width, 'number' },
     max_height = { config.max_height, 'number' },
-    border = { config.border, 'string' },
+    border = { config.border, { 'string', 'table' } },
     scrollbar = { config.scrollbar, 'boolean' },
     order = { config.order, 'table' },
     direction_priority = { config.direction_priority, 'table' },

lua/blink/cmp/config/signature.lua

@@ -60,7 +60,7 @@ function signature.validate(config)
     min_width = { config.window.min_width, 'number' },
     max_width = { config.window.max_width, 'number' },
     max_height = { config.window.max_height, 'number' },
-    border = { config.window.border, 'string' },
+    border = { config.window.border, { 'string', 'table' } },
     winblend = { config.window.winblend, 'number' },
     winhighlight = { config.window.winhighlight, 'string' },
     scrollbar = { config.window.scrollbar, 'boolean' },