--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/tesseract/src/ccmain/adaptions.cpp	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,120 @@
+/**********************************************************************
+ * File:        adaptions.cpp  (Formerly adaptions.c)
+ * Description: Functions used to adapt to blobs already confidently
+ *              identified
+ * Author:      Chris Newton
+ *
+ * (C) Copyright 1992, Hewlett-Packard Ltd.
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ *
+ **********************************************************************/
+
+#include <cctype>
+#include <cstring>
+#include "control.h"
+#include "reject.h"
+#include "stopper.h"
+#include "tesseractclass.h"
+#include "tessvars.h"
+
+// Include automatically generated configuration file if running autoconf.
+#ifdef HAVE_CONFIG_H
+#  include "config_auto.h"
+#endif
+
+namespace tesseract {
+bool Tesseract::word_adaptable( // should we adapt?
+    WERD_RES *word, uint16_t mode) {
+  if (tessedit_adaption_debug) {
+    tprintf("Running word_adaptable() for %s rating %.4f certainty %.4f\n",
+            word->best_choice->unichar_string().c_str(), word->best_choice->rating(),
+            word->best_choice->certainty());
+  }
+
+  bool status = false;
+  std::bitset<16> flags(mode);
+
+  enum MODES {
+    ADAPTABLE_WERD,
+    ACCEPTABLE_WERD,
+    CHECK_DAWGS,
+    CHECK_SPACES,
+    CHECK_ONE_ELL_CONFLICT,
+    CHECK_AMBIG_WERD
+  };
+
+  /*
+0: NO adaption
+*/
+  if (mode == 0) {
+    if (tessedit_adaption_debug) {
+      tprintf("adaption disabled\n");
+    }
+    return false;
+  }
+
+  if (flags[ADAPTABLE_WERD]) {
+    status |= word->tess_would_adapt; // result of Classify::AdaptableWord()
+    if (tessedit_adaption_debug && !status) {
+      tprintf("tess_would_adapt bit is false\n");
+    }
+  }
+
+  if (flags[ACCEPTABLE_WERD]) {
+    status |= word->tess_accepted;
+    if (tessedit_adaption_debug && !status) {
+      tprintf("tess_accepted bit is false\n");
+    }
+  }
+
+  if (!status) {  // If not set then
+    return false; // ignore other checks
+  }
+
+  if (flags[CHECK_DAWGS] && (word->best_choice->permuter() != SYSTEM_DAWG_PERM) &&
+      (word->best_choice->permuter() != FREQ_DAWG_PERM) &&
+      (word->best_choice->permuter() != USER_DAWG_PERM) &&
+      (word->best_choice->permuter() != NUMBER_PERM)) {
+    if (tessedit_adaption_debug) {
+      tprintf("word not in dawgs\n");
+    }
+    return false;
+  }
+
+  if (flags[CHECK_ONE_ELL_CONFLICT] && one_ell_conflict(word, false)) {
+    if (tessedit_adaption_debug) {
+      tprintf("word has ell conflict\n");
+    }
+    return false;
+  }
+
+  if (flags[CHECK_SPACES] &&
+      (strchr(word->best_choice->unichar_string().c_str(), ' ') != nullptr)) {
+    if (tessedit_adaption_debug) {
+      tprintf("word contains spaces\n");
+    }
+    return false;
+  }
+
+  if (flags[CHECK_AMBIG_WERD] && word->best_choice->dangerous_ambig_found()) {
+    if (tessedit_adaption_debug) {
+      tprintf("word is ambiguous\n");
+    }
+    return false;
+  }
+
+  if (tessedit_adaption_debug) {
+    tprintf("returning status %d\n", status);
+  }
+  return status;
+}
+
+} // namespace tesseract