vim-patch:8.1.1118: a couple of conditions are hard to understand

Problem:    A couple of conditions are hard to understand.
Solution:   Split the conditions into pieces. (Ozaki Kiichi)

https://github.com/vim/vim/commit/652de23dc7abf6aa2721ccee7fe279b5cce8069c

1 files changed, 17 insertions, 10 deletions

diff --git a/src/nvim/getchar.c b/src/nvim/getchar.c
index c29ef9f822..0020b57482 100644
--- a/src/nvim/getchar.c
+++ b/src/nvim/getchar.c
@@ -2270,18 +2270,25 @@ static int vgetorpeek(int advance)
           // that has a <Nop> RHS.
           timedout = false;
         }
+
+        long wait_time = 0;
+
+        if (advance) {
+          if (typebuf.tb_len == 0
+              || !(p_timeout || (p_ttimeout && keylen == KEYLEN_PART_KEY))) {
+            // blocking wait
+            wait_time = -1L;
+          } else if (keylen == KEYLEN_PART_KEY && p_ttm >= 0) {
+            wait_time = p_ttm;
+          } else {
+            wait_time = p_tm;
+          }
+        }
+
         wait_tb_len = typebuf.tb_len;
         c = inchar(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len,
-            typebuf.tb_buflen - typebuf.tb_off - typebuf.tb_len - 1,
-            !advance
-            ? 0
-            : ((typebuf.tb_len == 0
-                || !(p_timeout || (p_ttimeout
-                                   && keylen == KEYLEN_PART_KEY)))
-               ? -1L
-               : ((keylen == KEYLEN_PART_KEY && p_ttm >= 0)
-                  ? p_ttm
-                  : p_tm)));
+                   typebuf.tb_buflen - typebuf.tb_off - typebuf.tb_len - 1,
+                   wait_time);
 
         if (i != 0)
           pop_showcmd();