vim-patch:9.0.1245: code is indented more than necessary (#21998)

Problem:    Code is indented more than necessary.
Solution:   Use an early return where it makes sense. (Yegappan Lakshmanan,
            closes vim/vim#11879)

https://github.com/vim/vim/commit/032713f8299abd92fcfb1e490d1ae5c1ecadde41

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

5 files changed, 226 insertions, 213 deletions

diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index 5a31288ecd..c527b62c8f 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -7823,34 +7823,35 @@ static void f_strftime(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
   // MSVC returns NULL for an invalid value of seconds.
   if (curtime_ptr == NULL) {
     rettv->vval.v_string = xstrdup(_("(Invalid)"));
-  } else {
-    vimconv_T conv;
+    return;
+  }
 
-    conv.vc_type = CONV_NONE;
-    char *enc = enc_locale();
-    convert_setup(&conv, p_enc, enc);
-    if (conv.vc_type != CONV_NONE) {
-      p = string_convert(&conv, p, NULL);
-    }
-    char result_buf[256];
-    if (p == NULL || strftime(result_buf, sizeof(result_buf), p, curtime_ptr) == 0) {
-      result_buf[0] = NUL;
-    }
+  vimconv_T conv;
 
-    if (conv.vc_type != CONV_NONE) {
-      xfree(p);
-    }
-    convert_setup(&conv, enc, p_enc);
-    if (conv.vc_type != CONV_NONE) {
-      rettv->vval.v_string = string_convert(&conv, result_buf, NULL);
-    } else {
-      rettv->vval.v_string = xstrdup(result_buf);
-    }
+  conv.vc_type = CONV_NONE;
+  char *enc = enc_locale();
+  convert_setup(&conv, p_enc, enc);
+  if (conv.vc_type != CONV_NONE) {
+    p = string_convert(&conv, p, NULL);
+  }
+  char result_buf[256];
+  if (p == NULL || strftime(result_buf, sizeof(result_buf), p, curtime_ptr) == 0) {
+    result_buf[0] = NUL;
+  }
 
-    // Release conversion descriptors.
-    convert_setup(&conv, NULL, NULL);
-    xfree(enc);
+  if (conv.vc_type != CONV_NONE) {
+    xfree(p);
   }
+  convert_setup(&conv, enc, p_enc);
+  if (conv.vc_type != CONV_NONE) {
+    rettv->vval.v_string = string_convert(&conv, result_buf, NULL);
+  } else {
+    rettv->vval.v_string = xstrdup(result_buf);
+  }
+
+  // Release conversion descriptors.
+  convert_setup(&conv, NULL, NULL);
+  xfree(enc);
 }
 
 /// "strgetchar()" function
@@ -8654,6 +8655,7 @@ static void f_timer_pause(typval_T *argvars, typval_T *unused, EvalFuncData fptr
     emsg(_(e_number_exp));
     return;
   }
+
   int paused = (bool)tv_get_number(&argvars[1]);
   timer_T *timer = find_timer_by_nr(tv_get_number(&argvars[0]));
   if (timer != NULL) {
diff --git a/src/nvim/eval/typval.c b/src/nvim/eval/typval.c
index 05b4737206..c298064d86 100644
--- a/src/nvim/eval/typval.c
+++ b/src/nvim/eval/typval.c
@@ -3208,17 +3208,19 @@ static inline void _nothing_conv_dict_end(typval_T *const tv, dict_T **const dic
 /// @param[in,out]  tv  Value to free.
 void tv_clear(typval_T *const tv)
 {
-  if (tv != NULL && tv->v_type != VAR_UNKNOWN) {
-    // WARNING: do not translate the string here, gettext is slow and function
-    // is used *very* often. At the current state encode_vim_to_nothing() does
-    // not error out and does not use the argument anywhere.
-    //
-    // If situation changes and this argument will be used, translate it in the
-    // place where it is used.
-    const int evn_ret = encode_vim_to_nothing(NULL, tv, "tv_clear() argument");
-    (void)evn_ret;
-    assert(evn_ret == OK);
+  if (tv == NULL || tv->v_type == VAR_UNKNOWN) {
+    return;
   }
+
+  // WARNING: do not translate the string here, gettext is slow and function
+  // is used *very* often. At the current state encode_vim_to_nothing() does
+  // not error out and does not use the argument anywhere.
+  //
+  // If situation changes and this argument will be used, translate it in the
+  // place where it is used.
+  const int evn_ret = encode_vim_to_nothing(NULL, tv, "tv_clear() argument");
+  (void)evn_ret;
+  assert(evn_ret == OK);
 }
 
 //{{{3 Free
@@ -3228,35 +3230,37 @@ void tv_clear(typval_T *const tv)
 /// @param  tv  Object to free.
 void tv_free(typval_T *tv)
 {
-  if (tv != NULL) {
-    switch (tv->v_type) {
-    case VAR_PARTIAL:
-      partial_unref(tv->vval.v_partial);
-      break;
-    case VAR_FUNC:
-      func_unref(tv->vval.v_string);
-      FALLTHROUGH;
-    case VAR_STRING:
-      xfree(tv->vval.v_string);
-      break;
-    case VAR_BLOB:
-      tv_blob_unref(tv->vval.v_blob);
-      break;
-    case VAR_LIST:
-      tv_list_unref(tv->vval.v_list);
-      break;
-    case VAR_DICT:
-      tv_dict_unref(tv->vval.v_dict);
-      break;
-    case VAR_BOOL:
-    case VAR_SPECIAL:
-    case VAR_NUMBER:
-    case VAR_FLOAT:
-    case VAR_UNKNOWN:
-      break;
-    }
-    xfree(tv);
+  if (tv == NULL) {
+    return;
+  }
+
+  switch (tv->v_type) {
+  case VAR_PARTIAL:
+    partial_unref(tv->vval.v_partial);
+    break;
+  case VAR_FUNC:
+    func_unref(tv->vval.v_string);
+    FALLTHROUGH;
+  case VAR_STRING:
+    xfree(tv->vval.v_string);
+    break;
+  case VAR_BLOB:
+    tv_blob_unref(tv->vval.v_blob);
+    break;
+  case VAR_LIST:
+    tv_list_unref(tv->vval.v_list);
+    break;
+  case VAR_DICT:
+    tv_dict_unref(tv->vval.v_dict);
+    break;
+  case VAR_BOOL:
+  case VAR_SPECIAL:
+  case VAR_NUMBER:
+  case VAR_FLOAT:
+  case VAR_UNKNOWN:
+    break;
   }
+  xfree(tv);
 }
 
 //{{{3 Copy
diff --git a/src/nvim/tag.c b/src/nvim/tag.c
index 197184c181..42618e8924 100644
--- a/src/nvim/tag.c
+++ b/src/nvim/tag.c
@@ -2732,55 +2732,57 @@ static int parse_match(char *lbuf, tagptrs_T *tagp)
   tagp->tagline = 0;
   tagp->command_end = NULL;
 
-  if (retval == OK) {
-    // Try to find a kind field: "kind:<kind>" or just "<kind>"
-    p = tagp->command;
-    if (find_extra(&p) == OK) {
-      tagp->command_end = p;
-      if (p > tagp->command && p[-1] == '|') {
-        tagp->command_end = p - 1;  // drop trailing bar
-      }
-      p += 2;  // skip ";\""
-      if (*p++ == TAB) {
-        // Accept ASCII alphabetic kind characters and any multi-byte
-        // character.
-        while (ASCII_ISALPHA(*p) || utfc_ptr2len(p) > 1) {
-          if (strncmp(p, "kind:", 5) == 0) {
-            tagp->tagkind = p + 5;
-          } else if (strncmp(p, "user_data:", 10) == 0) {
-            tagp->user_data = p + 10;
-          } else if (strncmp(p, "line:", 5) == 0) {
-            tagp->tagline = atoi(p + 5);
-          }
-          if (tagp->tagkind != NULL && tagp->user_data != NULL) {
-            break;
-          }
+  if (retval != OK) {
+    return retval;
+  }
 
-          pc = vim_strchr(p, ':');
-          pt = vim_strchr(p, '\t');
-          if (pc == NULL || (pt != NULL && pc > pt)) {
-            tagp->tagkind = p;
-          }
-          if (pt == NULL) {
-            break;
-          }
-          p = pt;
-          MB_PTR_ADV(p);
+  // Try to find a kind field: "kind:<kind>" or just "<kind>"
+  p = tagp->command;
+  if (find_extra(&p) == OK) {
+    tagp->command_end = p;
+    if (p > tagp->command && p[-1] == '|') {
+      tagp->command_end = p - 1;  // drop trailing bar
+    }
+    p += 2;  // skip ";\""
+    if (*p++ == TAB) {
+      // Accept ASCII alphabetic kind characters and any multi-byte
+      // character.
+      while (ASCII_ISALPHA(*p) || utfc_ptr2len(p) > 1) {
+        if (strncmp(p, "kind:", 5) == 0) {
+          tagp->tagkind = p + 5;
+        } else if (strncmp(p, "user_data:", 10) == 0) {
+          tagp->user_data = p + 10;
+        } else if (strncmp(p, "line:", 5) == 0) {
+          tagp->tagline = atoi(p + 5);
         }
+        if (tagp->tagkind != NULL && tagp->user_data != NULL) {
+          break;
+        }
+
+        pc = vim_strchr(p, ':');
+        pt = vim_strchr(p, '\t');
+        if (pc == NULL || (pt != NULL && pc > pt)) {
+          tagp->tagkind = p;
+        }
+        if (pt == NULL) {
+          break;
+        }
+        p = pt;
+        MB_PTR_ADV(p);
       }
     }
-    if (tagp->tagkind != NULL) {
-      for (p = tagp->tagkind;
-           *p && *p != '\t' && *p != '\r' && *p != '\n';
-           MB_PTR_ADV(p)) {}
-      tagp->tagkind_end = p;
-    }
-    if (tagp->user_data != NULL) {
-      for (p = tagp->user_data;
-           *p && *p != '\t' && *p != '\r' && *p != '\n';
-           MB_PTR_ADV(p)) {}
-      tagp->user_data_end = p;
-    }
+  }
+  if (tagp->tagkind != NULL) {
+    for (p = tagp->tagkind;
+         *p && *p != '\t' && *p != '\r' && *p != '\n';
+         MB_PTR_ADV(p)) {}
+    tagp->tagkind_end = p;
+  }
+  if (tagp->user_data != NULL) {
+    for (p = tagp->user_data;
+         *p && *p != '\t' && *p != '\r' && *p != '\n';
+         MB_PTR_ADV(p)) {}
+    tagp->user_data_end = p;
   }
   return retval;
 }
@@ -3329,86 +3331,88 @@ int get_tags(list_T *list, char *pat, char *buf_fname)
 
   ret = find_tags(pat, &num_matches, &matches,
                   TAG_REGEXP | TAG_NOIC, MAXCOL, buf_fname);
-  if (ret == OK && num_matches > 0) {
-    for (i = 0; i < num_matches; i++) {
-      int parse_result = parse_match(matches[i], &tp);
+  if (ret != OK || num_matches <= 0) {
+    return ret;
+  }
 
-      // Avoid an unused variable warning in release builds.
-      (void)parse_result;
-      assert(parse_result == OK);
+  for (i = 0; i < num_matches; i++) {
+    int parse_result = parse_match(matches[i], &tp);
 
-      is_static = test_for_static(&tp);
+    // Avoid an unused variable warning in release builds.
+    (void)parse_result;
+    assert(parse_result == OK);
 
-      // Skip pseudo-tag lines.
-      if (strncmp(tp.tagname, "!_TAG_", 6) == 0) {
-        xfree(matches[i]);
-        continue;
-      }
+    is_static = test_for_static(&tp);
+
+    // Skip pseudo-tag lines.
+    if (strncmp(tp.tagname, "!_TAG_", 6) == 0) {
+      xfree(matches[i]);
+      continue;
+    }
 
-      dict = tv_dict_alloc();
-      tv_list_append_dict(list, dict);
-
-      full_fname = tag_full_fname(&tp);
-      if (add_tag_field(dict, "name", tp.tagname, tp.tagname_end) == FAIL
-          || add_tag_field(dict, "filename", full_fname, NULL) == FAIL
-          || add_tag_field(dict, "cmd", tp.command, tp.command_end) == FAIL
-          || add_tag_field(dict, "kind", tp.tagkind,
-                           tp.tagkind ? tp.tagkind_end : NULL) == FAIL
-          || tv_dict_add_nr(dict, S_LEN("static"), is_static) == FAIL) {
-        ret = FAIL;
-      }
-
-      xfree(full_fname);
-
-      if (tp.command_end != NULL) {
-        for (char *p = tp.command_end + 3;
-             *p != NUL && *p != '\n' && *p != '\r';
-             MB_PTR_ADV(p)) {
-          if (p == tp.tagkind
-              || (p + 5 == tp.tagkind && strncmp(p, "kind:", 5) == 0)) {
-            // skip "kind:<kind>" and "<kind>"
-            p = tp.tagkind_end - 1;
-          } else if (strncmp(p, "file:", 5) == 0) {
-            // skip "file:" (static tag)
-            p += 4;
-          } else if (!ascii_iswhite(*p)) {
-            char *s, *n;
-            int len;
-
-            // Add extra field as a dict entry.  Fields are
-            // separated by Tabs.
-            n = p;
-            while (*p != NUL && *p >= ' ' && *p < 127 && *p != ':') {
+    dict = tv_dict_alloc();
+    tv_list_append_dict(list, dict);
+
+    full_fname = tag_full_fname(&tp);
+    if (add_tag_field(dict, "name", tp.tagname, tp.tagname_end) == FAIL
+        || add_tag_field(dict, "filename", full_fname, NULL) == FAIL
+        || add_tag_field(dict, "cmd", tp.command, tp.command_end) == FAIL
+        || add_tag_field(dict, "kind", tp.tagkind,
+                         tp.tagkind ? tp.tagkind_end : NULL) == FAIL
+        || tv_dict_add_nr(dict, S_LEN("static"), is_static) == FAIL) {
+      ret = FAIL;
+    }
+
+    xfree(full_fname);
+
+    if (tp.command_end != NULL) {
+      for (char *p = tp.command_end + 3;
+           *p != NUL && *p != '\n' && *p != '\r';
+           MB_PTR_ADV(p)) {
+        if (p == tp.tagkind
+            || (p + 5 == tp.tagkind && strncmp(p, "kind:", 5) == 0)) {
+          // skip "kind:<kind>" and "<kind>"
+          p = tp.tagkind_end - 1;
+        } else if (strncmp(p, "file:", 5) == 0) {
+          // skip "file:" (static tag)
+          p += 4;
+        } else if (!ascii_iswhite(*p)) {
+          char *s, *n;
+          int len;
+
+          // Add extra field as a dict entry.  Fields are
+          // separated by Tabs.
+          n = p;
+          while (*p != NUL && *p >= ' ' && *p < 127 && *p != ':') {
+            p++;
+          }
+          len = (int)(p - n);
+          if (*p == ':' && len > 0) {
+            s = ++p;
+            while (*p != NUL && (uint8_t)(*p) >= ' ') {
               p++;
             }
-            len = (int)(p - n);
-            if (*p == ':' && len > 0) {
-              s = ++p;
-              while (*p != NUL && (uint8_t)(*p) >= ' ') {
-                p++;
-              }
-              n[len] = NUL;
-              if (add_tag_field(dict, n, s, p) == FAIL) {
-                ret = FAIL;
-              }
-              n[len] = ':';
-            } else {
-              // Skip field without colon.
-              while (*p != NUL && (uint8_t)(*p) >= ' ') {
-                p++;
-              }
+            n[len] = NUL;
+            if (add_tag_field(dict, n, s, p) == FAIL) {
+              ret = FAIL;
             }
-            if (*p == NUL) {
-              break;
+            n[len] = ':';
+          } else {
+            // Skip field without colon.
+            while (*p != NUL && (uint8_t)(*p) >= ' ') {
+              p++;
             }
           }
+          if (*p == NUL) {
+            break;
+          }
         }
       }
-
-      xfree(matches[i]);
     }
-    xfree(matches);
+
+    xfree(matches[i]);
   }
+  xfree(matches);
   return ret;
 }
 
diff --git a/src/nvim/testing.c b/src/nvim/testing.c
index edf92c78ac..b5921b3445 100644
--- a/src/nvim/testing.c
+++ b/src/nvim/testing.c
@@ -77,31 +77,32 @@ static void ga_concat_esc(garray_T *gap, const char *p, int clen)
     memmove(buf, p, (size_t)clen);
     buf[clen] = NUL;
     ga_concat(gap, buf);
-  } else {
-    switch (*p) {
-    case BS:
-      ga_concat(gap, "\\b"); break;
-    case ESC:
-      ga_concat(gap, "\\e"); break;
-    case FF:
-      ga_concat(gap, "\\f"); break;
-    case NL:
-      ga_concat(gap, "\\n"); break;
-    case TAB:
-      ga_concat(gap, "\\t"); break;
-    case CAR:
-      ga_concat(gap, "\\r"); break;
-    case '\\':
-      ga_concat(gap, "\\\\"); break;
-    default:
-      if ((uint8_t)(*p) < ' ' || *p == 0x7f) {
-        vim_snprintf(buf, NUMBUFLEN, "\\x%02x", *p);
-        ga_concat(gap, buf);
-      } else {
-        ga_append(gap, (uint8_t)(*p));
-      }
-      break;
+    return;
+  }
+
+  switch (*p) {
+  case BS:
+    ga_concat(gap, "\\b"); break;
+  case ESC:
+    ga_concat(gap, "\\e"); break;
+  case FF:
+    ga_concat(gap, "\\f"); break;
+  case NL:
+    ga_concat(gap, "\\n"); break;
+  case TAB:
+    ga_concat(gap, "\\t"); break;
+  case CAR:
+    ga_concat(gap, "\\r"); break;
+  case '\\':
+    ga_concat(gap, "\\\\"); break;
+  default:
+    if ((uint8_t)(*p) < ' ' || *p == 0x7f) {
+      vim_snprintf(buf, NUMBUFLEN, "\\x%02x", *p);
+      ga_concat(gap, buf);
+    } else {
+      ga_append(gap, (uint8_t)(*p));
     }
+    break;
   }
 }
 
diff --git a/src/nvim/textformat.c b/src/nvim/textformat.c
index fbea1ccfb7..e30580a748 100644
--- a/src/nvim/textformat.c
+++ b/src/nvim/textformat.c
@@ -736,22 +736,24 @@ void check_auto_format(bool end_insert)
   int c = ' ';
   int cc;
 
-  if (did_add_space) {
-    cc = gchar_cursor();
-    if (!WHITECHAR(cc)) {
-      // Somehow the space was removed already.
+  if (!did_add_space) {
+    return;
+  }
+
+  cc = gchar_cursor();
+  if (!WHITECHAR(cc)) {
+    // Somehow the space was removed already.
+    did_add_space = false;
+  } else {
+    if (!end_insert) {
+      inc_cursor();
+      c = gchar_cursor();
+      dec_cursor();
+    }
+    if (c != NUL) {
+      // The space is no longer at the end of the line, delete it.
+      del_char(false);
       did_add_space = false;
-    } else {
-      if (!end_insert) {
-        inc_cursor();
-        c = gchar_cursor();
-        dec_cursor();
-      }
-      if (c != NUL) {
-        // The space is no longer at the end of the line, delete it.
-        del_char(false);
-        did_add_space = false;
-      }
     }
   }
 }