refactor: replace TRUE/FALSE macros with C99 true/false

src/nvim/buffer.c

@@ -540,12 +540,10 @@ bool close_buffer(win_T *win, buf_T *buf, int action, bool abort_if_last)
     del_buf = true;
   }
 
-  /*
-   * Free all things allocated for this buffer.
-   * Also calls the "BufDelete" autocommands when del_buf is TRUE.
-   */
-  /* Remember if we are closing the current buffer.  Restore the number of
-   * windows, so that autocommands in buf_freeall() don't get confused. */
+  // Free all things allocated for this buffer.
+  // Also calls the "BufDelete" autocommands when del_buf is true.
+  // Remember if we are closing the current buffer.  Restore the number of
+  // windows, so that autocommands in buf_freeall() don't get confused.
   bool is_curbuf = (buf == curbuf);
 
   // When closing the current buffer stop Visual mode before freeing
@@ -5046,8 +5044,8 @@ do_arg_all(
   xfree(opened);
 }
 
-// Return TRUE if "buf" is a prompt buffer.
-int bt_prompt(buf_T *buf)
+/// @return true if "buf" is a prompt buffer.
+bool bt_prompt(buf_T *buf)
 {
     return buf != NULL && buf->b_p_bt[0] == 'p';
 }

src/nvim/change.c

@@ -779,7 +779,7 @@ int del_bytes(colnr_T count, bool fixpos_arg, bool use_delcombine)
   int movelen = oldlen - col - count + 1;  // includes trailing NUL
   if (movelen <= 1) {
     // If we just took off the last character of a non-blank line, and
-    // fixpos is TRUE, we don't want to end up positioned at the NUL,
+    // fixpos is true, we don't want to end up positioned at the NUL,
     // unless "restart_edit" is set or 'virtualedit' contains "onemore".
     if (col > 0 && fixpos && restart_edit == 0
         && (ve_flags & VE_ONEMORE) == 0

src/nvim/digraph.c

@@ -1502,10 +1502,10 @@ char_u *get_digraph_for_char(int val_arg)
 /// Get a digraph.  Used after typing CTRL-K on the command line or in normal
 /// mode.
 ///
-/// @param cmdline TRUE when called from the cmdline
+/// @param cmdline true when called from the cmdline
 ///
 /// @returns composed character, or NUL when ESC was used.
-int get_digraph(int cmdline)
+int get_digraph(bool cmdline)
 {
   int cc;
   no_mapping++;

src/nvim/highlight.c

@@ -46,7 +46,7 @@ void highlight_init(void)
                                     .id1 = 0, .id2 = 0 }));
 }
 
-/// @return TRUE if hl table was reset
+/// @return true if hl table was reset
 bool highlight_use_hlstate(void)
 {
   if (hlstate_active) {

src/nvim/indent.c

@@ -62,10 +62,10 @@ int get_indent_buf(buf_T *buf, linenr_T lnum)
 }
 
 
-// Count the size (in window cells) of the indent in line "ptr", with
-// 'tabstop' at "ts".
-// If @param list is TRUE, count only screen size for tabs.
-int get_indent_str(const char_u *ptr, int ts, int list)
+/// Count the size (in window cells) of the indent in line "ptr", with
+/// 'tabstop' at "ts".
+/// If @param list is true, count only screen size for tabs.
+int get_indent_str(const char_u *ptr, int ts, bool list)
   FUNC_ATTR_NONNULL_ALL
 {
   int count = 0;
@@ -91,9 +91,9 @@ int get_indent_str(const char_u *ptr, int ts, int list)
   return count;
 }
 
-// Count the size (in window cells) of the indent in line "ptr", using
-// variable tabstops.
-// if "list" is true, count only screen size for tabs.
+/// Count the size (in window cells) of the indent in line "ptr", using
+/// variable tabstops.
+/// if "list" is true, count only screen size for tabs.
 int get_indent_str_vtab(const char_u *ptr, long ts, long *vts, bool list)
 {
   int count = 0;

src/nvim/keymap.c

@@ -543,7 +543,7 @@ unsigned int trans_special(const char_u **srcp, const size_t src_len,
 
 /// Put the character sequence for "key" with "modifiers" into "dst" and return
 /// the resulting length.
-/// When "keycode" is TRUE prefer key code, e.g. K_DEL instead of DEL.
+/// When "keycode" is true prefer key code, e.g. K_DEL instead of DEL.
 /// The sequence is not NUL terminated.
 /// This is how characters in a string are encoded.
 unsigned int special_to_buf(int key, int modifiers, bool keycode, char_u *dst)

src/nvim/mbyte.c

@@ -2354,10 +2354,8 @@ int convert_setup(vimconv_T *vcp, char_u *from, char_u *to)
   return convert_setup_ext(vcp, from, true, to, true);
 }
 
-/*
- * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all
- * "from" unicode charsets be considered utf-8.  Same for "to".
- */
+/// As convert_setup(), but only when from_unicode_is_utf8 is true will all
+/// "from" unicode charsets be considered utf-8.  Same for "to".
 int convert_setup_ext(vimconv_T *vcp, char_u *from, bool from_unicode_is_utf8,
                       char_u *to, bool to_unicode_is_utf8)
 {

src/nvim/memfile_defs.h

@@ -101,7 +101,7 @@ typedef struct memfile {
   blocknr_T mf_neg_count;            /// number of negative blocks numbers
   blocknr_T mf_infile_count;         /// number of pages in the file
   unsigned mf_page_size;             /// number of bytes in a page
-  bool mf_dirty;                      /// TRUE if there are dirty blocks
+  bool mf_dirty;                     /// true if there are dirty blocks
 } memfile_T;
 
 #endif  // NVIM_MEMFILE_DEFS_H

src/nvim/misc1.c

@@ -750,8 +750,8 @@ get_number (
       stuffcharReadbuff(':');
       if (!exmode_active)
         cmdline_row = msg_row;
-      skip_redraw = TRUE;           /* skip redraw once */
-      do_redraw = FALSE;
+      skip_redraw = true;           // skip redraw once
+      do_redraw = false;
       break;
     } else if (c == Ctrl_C || c == ESC || c == 'q') {
       n = 0;

src/nvim/mouse.c

@@ -570,9 +570,8 @@ static linenr_T find_longest_lnum(void)
   return ret;
 }
 
-///
-/// Do a horizontal scroll.  Return TRUE if the cursor moved, FALSE otherwise.
-///
+/// Do a horizontal scroll.
+/// @return true if the cursor moved, false otherwise.
 bool mouse_scroll_horiz(int dir)
 {
   if (curwin->w_p_wrap) {

src/nvim/normal.c

@@ -1340,7 +1340,7 @@ static int normal_check(VimState *state)
   quit_more = false;
 
   // If skip redraw is set (for ":" in wait_return()), don't redraw now.
-  // If there is nothing in the stuff_buffer or do_redraw is TRUE,
+  // If there is nothing in the stuff_buffer or do_redraw is true,
   // update cursor and redraw.
   if (skip_redraw || exmode_active) {
     skip_redraw = false;
@@ -8147,10 +8147,8 @@ static void nv_event(cmdarg_T *cap)
   }
 }
 
-/*
- * Return TRUE when 'mousemodel' is set to "popup" or "popup_setpos".
- */
-static int mouse_model_popup(void)
+/// @return true when 'mousemodel' is set to "popup" or "popup_setpos".
+static bool mouse_model_popup(void)
 {
   return p_mousem[0] == 'p';
 }

src/nvim/search.h

@@ -88,7 +88,7 @@ typedef struct searchstat
 {
     int     cur;      // current position of found words
     int     cnt;      // total count of found words
-    int     exact_match;    // TRUE if matched exactly on specified position
+    bool    exact_match;    // true if matched exactly on specified position
     int     incomplete;     // 0: search was fully completed
           // 1: recomputing was timed out
           // 2: max count exceeded

src/nvim/sign.c

@@ -115,10 +115,10 @@ static void sign_group_unref(char_u *groupname)
   }
 }
 
-/// Returns TRUE if 'sign' is in 'group'.
+/// @return true if 'sign' is in 'group'.
 /// A sign can either be in the global group (sign->group == NULL)
 /// or in a named group. If 'group' is '*', then the sign is part of the group.
-int sign_in_group(sign_entry_T *sign, const char_u *group)
+bool sign_in_group(sign_entry_T *sign, const char_u *group)
 {
     return ((group != NULL && STRCMP(group, "*") == 0)
             || (group == NULL && sign->se_group == NULL)