Cleanup stdio.h and Field naming. Add comment about Field.

base.h

@@ -3,7 +3,6 @@
 #include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>

cli_main.c

@@ -69,7 +69,7 @@ int main(int argc, char** argv) {
   }
 
   Field field;
-  gfield_init(&field);
+  field_init(&field);
   Field_load_error fle = field_load_file(input_file, &field);
   if (fle != Field_load_error_ok) {
     field_deinit(&field);

field.c

@@ -2,7 +2,7 @@
 #include "gbuffer.h"
 #include <ctype.h>
 
-void gfield_init(Field* f) {
+void field_init(Field* f) {
   f->buffer = NULL;
   f->height = 0;
   f->width = 0;

field.h

@@ -1,5 +1,10 @@
 #pragma once
 #include "base.h"
+#include <stdio.h> // FILE cannot be forward declared
+
+// A reusable buffer for glyphs, stored with its dimensions. Also some helpers
+// for loading/saving from files and doing common operations that a UI layer
+// might want to do. Not used by the VM.
 
 struct Field {
   Glyph* buffer;
@@ -7,7 +12,7 @@ struct Field {
   U16 width;
 };
 
-void gfield_init(Field* field);
+void field_init(Field* field);
 void field_init_fill(Field* field, Usz height, Usz width, Glyph fill_char);
 void field_deinit(Field* field);
 void field_resize_raw(Field* field, Usz height, Usz width);

osc_out.c

@@ -1,9 +1,9 @@
 #include "osc_out.h"
-
 #include <arpa/inet.h>
 #include <errno.h>
 #include <netdb.h>
 #include <netinet/in.h>
+#include <stdio.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 

tui_main.c

@@ -383,7 +383,7 @@ void undo_history_push(Undo_history* hist, Field* field, Usz tick_num) {
   } else {
     new_node = malloc(sizeof(Undo_node));
     ++hist->count;
-    gfield_init(&new_node->field);
+    field_init(&new_node->field);
   }
   field_copy(field, &new_node->field);
   new_node->tick_num = tick_num;
@@ -769,9 +769,9 @@ typedef struct {
 } Ged;
 
 void ged_init(Ged* a, Usz undo_limit) {
-  gfield_init(&a->field);
-  gfield_init(&a->scratch_field);
-  gfield_init(&a->clipboard_field);
+  field_init(&a->field);
+  field_init(&a->scratch_field);
+  field_init(&a->clipboard_field);
   markmap_reusable_init(&a->markmap_r);
   undo_history_init(&a->undo_hist, undo_limit);
   ged_cursor_init(&a->ged_cursor);