vim-patch:9.0.1115: code is indented more than needed (#21598)

Problem:    Code is indented more than needed.
Solution:   Use an early return to reduce indenting. (Yegappan Lakshmanan,
            closes vim/vim#11758)

ed0c1d5d4b

Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>

src/nvim/ex_cmds.c

@@ -4743,7 +4743,9 @@ void ex_oldfiles(exarg_T *eap)
 
   if (l == NULL) {
     msg(_("No old files"));
-  } else {
+    return;
+  }
+
   msg_start();
   msg_scroll = true;
   TV_LIST_ITER(l, li, {
@@ -4784,7 +4786,6 @@ void ex_oldfiles(exarg_T *eap)
     }
   }
 }
-}
 
 void ex_trust(exarg_T *eap)
 {

src/nvim/ex_cmds2.c

@@ -705,9 +705,12 @@ void ex_compiler(exarg_T *eap)
     // List all compiler scripts.
     do_cmdline_cmd("echo globpath(&rtp, 'compiler/*.vim')");  // NOLINT
     do_cmdline_cmd("echo globpath(&rtp, 'compiler/*.lua')");  // NOLINT
-  } else {
+    return;
+  }
+
   size_t bufsize = strlen(eap->arg) + 14;
   buf = xmalloc(bufsize);
+
   if (eap->forceit) {
     // ":compiler! {name}" sets global options
     do_cmdline_cmd("command -nargs=* CompilerSet set <args>");
@@ -755,7 +758,6 @@ void ex_compiler(exarg_T *eap)
     }
   }
 }
-}
 
 /// ":checktime [buffer]"
 void ex_checktime(exarg_T *eap)
@@ -847,7 +849,9 @@ void ex_drop(exarg_T *eap)
     // edited in a window yet.  It's like ":tab all" but without closing
     // windows or tabs.
     ex_all(eap);
-  } else {
+    return;
+  }
+
   // ":drop file ...": Edit the first argument.  Jump to an existing
   // window if possible, edit in current window if the current buffer
   // can be abandoned, otherwise open a new window.
@@ -888,4 +892,3 @@ void ex_drop(exarg_T *eap)
   }
   ex_rewind(eap);
 }
-}

src/nvim/ex_docmd.c

@@ -4663,11 +4663,19 @@ static void ex_tabclose(exarg_T *eap)
 {
   if (cmdwin_type != 0) {
     cmdwin_result = K_IGNORE;
-  } else if (first_tabpage->tp_next == NULL) {
+    return;
+  }
+
+  if (first_tabpage->tp_next == NULL) {
     emsg(_("E784: Cannot close last tab page"));
-  } else {
+    return;
+  }
+
   int tab_number = get_tabpage_arg(eap);
-    if (eap->errmsg == NULL) {
+  if (eap->errmsg != NULL) {
+    return;
+  }
+
   tabpage_T *tp = find_tabpage(tab_number);
   if (tp == NULL) {
     beep_flush();
@@ -4680,19 +4688,25 @@ static void ex_tabclose(exarg_T *eap)
     tabpage_close(eap->forceit);
   }
 }
-  }
-}
 
 /// ":tabonly": close all tab pages except the current one
 static void ex_tabonly(exarg_T *eap)
 {
   if (cmdwin_type != 0) {
     cmdwin_result = K_IGNORE;
-  } else if (first_tabpage->tp_next == NULL) {
+    return;
+  }
+
+  if (first_tabpage->tp_next == NULL) {
     msg(_("Already only one tab page"));
-  } else {
+    return;
+  }
+
   int tab_number = get_tabpage_arg(eap);
-    if (eap->errmsg == NULL) {
+  if (eap->errmsg != NULL) {
+    return;
+  }
+
   goto_tabpage(tab_number);
   // Repeat this up to a 1000 times, because autocommands may
   // mess up the lists.
@@ -4714,8 +4728,6 @@ static void ex_tabonly(exarg_T *eap)
     }
   }
 }
-  }
-}
 
 /// Close the current tab page.
 void tabpage_close(int forceit)
@@ -4782,7 +4794,10 @@ static void ex_only(exarg_T *eap)
 static void ex_hide(exarg_T *eap)
 {
   // ":hide" or ":hide | cmd": hide current window
-  if (!eap->skip) {
+  if (eap->skip) {
+    return;
+  }
+
   if (eap->addr_count == 0) {
     win_close(curwin, false, eap->forceit);  // don't free buffer
   } else {
@@ -4802,7 +4817,6 @@ static void ex_hide(exarg_T *eap)
     win_close(win, false, eap->forceit);
   }
 }
-}
 
 /// ":stop" and ":suspend": Suspend Vim.
 static void ex_stop(exarg_T *eap)
@@ -5384,12 +5398,14 @@ static void ex_read(exarg_T *eap)
 
   if (eap->usefilter) {  // :r!cmd
     do_bang(1, eap, false, false, true);
-  } else {
+    return;
+  }
+
   if (u_save(eap->line2, (linenr_T)(eap->line2 + 1)) == FAIL) {
     return;
   }
-    int i;
 
+  int i;
   if (*eap->arg == NUL) {
     if (check_fname() == FAIL) {       // check for no file name
       return;
@@ -5429,7 +5445,6 @@ static void ex_read(exarg_T *eap)
     redraw_curbuf_later(UPD_VALID);
   }
 }
-}
 
 static char *prev_dir = NULL;
 
@@ -5584,6 +5599,7 @@ void ex_cd(exarg_T *eap)
     return;
   }
 #endif
+
   CdScope scope = kCdScopeGlobal;
   switch (eap->cmdidx) {
   case CMD_tcd:
@@ -5879,8 +5895,10 @@ static void ex_at(exarg_T *eap)
   // Put the register in the typeahead buffer with the "silent" flag.
   if (do_execreg(c, true, vim_strchr(p_cpo, CPO_EXECBUF) != NULL, true) == FAIL) {
     beep_flush();
-  } else {
-    bool save_efr = exec_from_reg;
+    return;
+  }
+
+  const bool save_efr = exec_from_reg;
 
   exec_from_reg = true;
 
@@ -5893,7 +5911,6 @@ static void ex_at(exarg_T *eap)
 
   exec_from_reg = save_efr;
 }
-}
 
 /// ":!".
 static void ex_bang(exarg_T *eap)
@@ -6222,9 +6239,14 @@ static void ex_mark(exarg_T *eap)
 {
   if (*eap->arg == NUL) {               // No argument?
     emsg(_(e_argreq));
-  } else if (eap->arg[1] != NUL) {         // more than one character?
+    return;
+  }
+
+  if (eap->arg[1] != NUL) {         // more than one character?
     semsg(_(e_trailing_arg), eap->arg);
-  } else {
+    return;
+  }
+
   pos_T pos = curwin->w_cursor;             // save curwin->w_cursor
   curwin->w_cursor.lnum = eap->line2;
   beginline(BL_WHITE | BL_FIX);
@@ -6233,7 +6255,6 @@ static void ex_mark(exarg_T *eap)
   }
   curwin->w_cursor = pos;             // restore curwin->w_cursor
 }
-}
 
 /// Update w_topline, w_leftcol and the cursor position.
 void update_topline_cursor(void)
@@ -7146,9 +7167,11 @@ void filetype_maybe_enable(void)
 /// ":setfiletype [FALLBACK] {name}"
 static void ex_setfiletype(exarg_T *eap)
 {
-  if (!did_filetype) {
-    char *arg = eap->arg;
+  if (did_filetype) {
+    return;
+  }
 
+  char *arg = eap->arg;
   if (strncmp(arg, "FALLBACK ", 9) == 0) {
     arg += 9;
   }
@@ -7158,7 +7181,6 @@ static void ex_setfiletype(exarg_T *eap)
     did_filetype = false;
   }
 }
-}
 
 static void ex_digraphs(exarg_T *eap)
 {

src/nvim/ex_getln.c

@@ -575,7 +575,10 @@ static int may_add_char_to_search(int firstc, int *c, incsearch_state_T *s)
 
 static void finish_incsearch_highlighting(int gotesc, incsearch_state_T *s, bool call_update_screen)
 {
-  if (s->did_incsearch) {
+  if (!s->did_incsearch) {
+    return;
+  }
+
   s->did_incsearch = false;
   if (gotesc) {
     curwin->w_cursor = s->save_cursor;
@@ -602,7 +605,6 @@ static void finish_incsearch_highlighting(int gotesc, incsearch_state_T *s, bool
     update_screen();
   }
 }
-}
 
 /// Initialize the current command-line info.
 static void init_ccline(int firstc, int indent)