feat(terminal): support grapheme clusters, including emoji

1 files changed, 29 insertions, 8 deletions

diff --git a/test/unit/fixtures/vterm_test.c b/test/unit/fixtures/vterm_test.c
index f227ae4591..8755e32e7a 100644
--- a/test/unit/fixtures/vterm_test.c
+++ b/test/unit/fixtures/vterm_test.c
@@ -1,4 +1,6 @@
 #include <stdio.h>
+#include "nvim/grid.h"
+#include "nvim/mbyte.h"
 
 #include "vterm_test.h"
 
@@ -202,6 +204,26 @@ int selection_query(VTermSelectionMask mask, void *user)
   return 1;
 }
 
+static void print_schar(FILE *f, schar_T schar) {
+  char buf[MAX_SCHAR_SIZE];
+  schar_get(buf, schar);
+  StrCharInfo ci = utf_ptr2StrCharInfo(buf);
+  bool did = false;
+  while (*ci.ptr != 0) {
+    if (did) {
+      fprintf(f, ",");
+    }
+
+    if (ci.chr.len == 1 && ci.chr.value >= 0x80) {
+      fprintf(f, "??%x", ci.chr.value);
+    } else {
+      fprintf(f, "%x", ci.chr.value);
+    }
+    did = true;
+    ci = utf_ptr2StrCharInfo(ci.ptr + ci.chr.len);
+  }
+}
+
 bool want_state_putglyph;
 int state_putglyph(VTermGlyphInfo *info, VTermPos pos, void *user)
 {
@@ -211,9 +233,7 @@ int state_putglyph(VTermGlyphInfo *info, VTermPos pos, void *user)
 
   FILE *f = fopen(VTERM_TEST_FILE, "a");
   fprintf(f, "putglyph ");
-  for (int i = 0; i < VTERM_MAX_CHARS_PER_CELL && info->chars[i]; i++) {
-    fprintf(f, i ? ",%x" : "%x", info->chars[i]);
-  }
+  print_schar(f, info->schar);
   fprintf(f, " %d %d,%d", info->width, pos.row, pos.col);
   if (info->protected_cell) {
     fprintf(f, " prot");
@@ -443,14 +463,15 @@ int screen_sb_pushline(int cols, const VTermScreenCell *cells, void *user)
   }
 
   int eol = cols;
-  while (eol && !cells[eol - 1].chars[0]) {
+  while (eol && !cells[eol-1].schar) {
     eol--;
   }
 
   FILE *f = fopen(VTERM_TEST_FILE, "a");
   fprintf(f, "sb_pushline %d =", cols);
   for (int c = 0; c < eol; c++) {
-    fprintf(f, " %02X", cells[c].chars[0]);
+    fprintf(f, " "); 
+    print_schar(f, cells[c].schar);
   }
   fprintf(f, "\n");
 
@@ -467,10 +488,10 @@ int screen_sb_popline(int cols, VTermScreenCell *cells, void *user)
 
   // All lines of scrollback contain "ABCDE"
   for (int col = 0; col < cols; col++) {
-    if (col < 5) {
-      cells[col].chars[0] = (uint32_t)('A' + col);
+    if(col < 5) {
+      cells[col].schar = schar_from_ascii((uint32_t)('A' + col));
     } else {
-      cells[col].chars[0] = 0;
+      cells[col].schar = 0;
     }
 
     cells[col].width = 1;