keymap: add more (keypad) keycodes #9793

- K_KORIGIN instead of K_KCENTER: This name is similar to what is used
  by xev. Alternative could be K_KBEGIN as hinted here:
  https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-PC-Style-Function-Keys
  But I find Begin and Home too similar, and it might induced some
  confusion. The naming looked related to some old keyboard
  configuration.

- keymap.c: alias KPPeriod to kDel instead of kPoint.
  This might seems weird, but this is actually the behaviour that should
  be expected. libtermkey produces "KPPeriod" when num lock is off. To
  fix this would need to change this name in termkey.

closes #9780
closes #9793

1 files changed, 45 insertions, 42 deletions

diff --git a/src/nvim/getchar.c b/src/nvim/getchar.c
index 139bf7b802..87a8d9b53e 100644
--- a/src/nvim/getchar.c
+++ b/src/nvim/getchar.c
@@ -1425,49 +1425,52 @@ int vgetc(void)
       /* a keypad or special function key was not mapped, use it like
        * its ASCII equivalent */
       switch (c) {
-      case K_KPLUS:               c = '+'; break;
-      case K_KMINUS:              c = '-'; break;
-      case K_KDIVIDE:             c = '/'; break;
-      case K_KMULTIPLY:   c = '*'; break;
-      case K_KENTER:              c = CAR; break;
-      case K_KPOINT:
-        c = '.'; break;
-      case K_K0:          c = '0'; break;
-      case K_K1:          c = '1'; break;
-      case K_K2:          c = '2'; break;
-      case K_K3:          c = '3'; break;
-      case K_K4:          c = '4'; break;
-      case K_K5:          c = '5'; break;
-      case K_K6:          c = '6'; break;
-      case K_K7:          c = '7'; break;
-      case K_K8:          c = '8'; break;
-      case K_K9:          c = '9'; break;
-
-      case K_XHOME:
-      case K_ZHOME:       if (mod_mask == MOD_MASK_SHIFT) {
-          c = K_S_HOME;
-          mod_mask = 0;
-      } else if (mod_mask == MOD_MASK_CTRL) {
-          c = K_C_HOME;
-          mod_mask = 0;
-      } else
-          c = K_HOME;
-        break;
-      case K_XEND:
-      case K_ZEND:        if (mod_mask == MOD_MASK_SHIFT) {
-          c = K_S_END;
-          mod_mask = 0;
-      } else if (mod_mask == MOD_MASK_CTRL) {
-          c = K_C_END;
-          mod_mask = 0;
-      } else
-          c = K_END;
-        break;
+        case K_KPLUS:       c = '+'; break;
+        case K_KMINUS:      c = '-'; break;
+        case K_KDIVIDE:     c = '/'; break;
+        case K_KMULTIPLY:   c = '*'; break;
+        case K_KENTER:      c = CAR; break;
+        case K_KPOINT:      c = '.'; break;
+        case K_K0:          c = '0'; break;
+        case K_K1:          c = '1'; break;
+        case K_K2:          c = '2'; break;
+        case K_K3:          c = '3'; break;
+        case K_K4:          c = '4'; break;
+        case K_K5:          c = '5'; break;
+        case K_K6:          c = '6'; break;
+        case K_K7:          c = '7'; break;
+        case K_K8:          c = '8'; break;
+        case K_K9:          c = '9'; break;
+
+        case K_XHOME:
+        case K_ZHOME:
+          if (mod_mask == MOD_MASK_SHIFT) {
+            c = K_S_HOME;
+            mod_mask = 0;
+          } else if (mod_mask == MOD_MASK_CTRL) {
+            c = K_C_HOME;
+            mod_mask = 0;
+          } else {
+            c = K_HOME;
+          }
+          break;
+        case K_XEND:
+        case K_ZEND:
+          if (mod_mask == MOD_MASK_SHIFT) {
+            c = K_S_END;
+            mod_mask = 0;
+          } else if (mod_mask == MOD_MASK_CTRL) {
+            c = K_C_END;
+            mod_mask = 0;
+          } else {
+            c = K_END;
+          }
+          break;
 
-      case K_XUP:         c = K_UP; break;
-      case K_XDOWN:       c = K_DOWN; break;
-      case K_XLEFT:       c = K_LEFT; break;
-      case K_XRIGHT:      c = K_RIGHT; break;
+        case K_XUP:         c = K_UP; break;
+        case K_XDOWN:       c = K_DOWN; break;
+        case K_XLEFT:       c = K_LEFT; break;
+        case K_XRIGHT:      c = K_RIGHT; break;
       }
 
       /* For a multi-byte character get all the bytes and return the