Fix typos

25 files changed, 33 insertions, 33 deletions

diff --git a/src/core_write.cpp b/src/core_write.cpp
index 91742b7d1b..54b18a4931 100644
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -209,6 +209,6 @@ void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry,
         entry.pushKV("blockhash", hashBlock.GetHex());
 
     if (include_hex) {
-        entry.pushKV("hex", EncodeHexTx(tx, serialize_flags)); // the hex-encoded transaction. used the name "hex" to be consistent with the verbose output of "getrawtransaction".
+        entry.pushKV("hex", EncodeHexTx(tx, serialize_flags)); // The hex-encoded transaction. Used the name "hex" to be consistent with the verbose output of "getrawtransaction".
     }
 }
diff --git a/src/cuckoocache.h b/src/cuckoocache.h
index 947e1a7185..d1de712024 100644
--- a/src/cuckoocache.h
+++ b/src/cuckoocache.h
@@ -224,7 +224,7 @@ private:
      *
      * Instead we treat the 32-bit random number as a Q32 fixed-point number in the range
      *  [0,1) and simply multiply it by the size.  Then we just shift the result down by
-     *  32-bits to get our bucket number.  The results has non-uniformity the same as a
+     *  32-bits to get our bucket number.  The result has non-uniformity the same as a
      *  mod, but it is much faster to compute. More about this technique can be found at
      *  http://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/
      *
diff --git a/src/net.cpp b/src/net.cpp
index 53a0a9b180..975a1d10a0 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1954,7 +1954,7 @@ void CConnman::ThreadOpenAddedConnections()
         for (const AddedNodeInfo& info : vInfo) {
             if (!info.fConnected) {
                 if (!grant.TryAcquire()) {
-                    // If we've used up our semaphore and need a new one, lets not wait here since while we are waiting
+                    // If we've used up our semaphore and need a new one, let's not wait here since while we are waiting
                     // the addednodeinfo state might change.
                     break;
                 }
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index f5073fe903..61e6ae7448 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -339,7 +339,7 @@ bool MarkBlockAsInFlight(NodeId nodeid, const uint256& hash, const CBlockIndex*
     CNodeState *state = State(nodeid);
     assert(state != nullptr);
 
-    // Short-circuit most stuff in case its from the same node
+    // Short-circuit most stuff in case it is from the same node
     std::map<uint256, std::pair<NodeId, std::list<QueuedBlock>::iterator> >::iterator itInFlight = mapBlocksInFlight.find(hash);
     if (itInFlight != mapBlocksInFlight.end() && itInFlight->second.first == nodeid) {
         if (pit) {
@@ -518,7 +518,7 @@ void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<con
         }
 
         // Iterate over those blocks in vToFetch (in forward direction), adding the ones that
-        // are not yet downloaded and not in flight to vBlocks. In the mean time, update
+        // are not yet downloaded and not in flight to vBlocks. In the meantime, update
         // pindexLastCommonBlock as long as all ancestors are already downloaded, or if it's
         // already part of our chain (and therefore don't need it even if pruned).
         for (const CBlockIndex* pindex : vToFetch) {
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index b83755ab30..a45e9f85c1 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -206,7 +206,7 @@ void CoinControlDialog::showMenu(const QPoint &point)
         contextMenuItem = item;
 
         // disable some items (like Copy Transaction ID, lock, unlock) for tree roots in context menu
-        if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
+        if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means it is a child node, so it is not a parent node in tree mode)
         {
             copyTransactionHashAction->setEnabled(true);
             if (model->isLockedCoin(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt()))
@@ -374,7 +374,7 @@ void CoinControlDialog::radioListMode(bool checked)
 // checkbox clicked by user
 void CoinControlDialog::viewItemChanged(QTreeWidgetItem* item, int column)
 {
-    if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
+    if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means it is a child node, so it is not a parent node in tree mode)
     {
         COutPoint outpt(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());
 
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 71a69483f5..4b856986da 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -141,7 +141,7 @@ namespace GUIUtil
      * Makes a QTableView last column feel as if it was being resized from its left border.
      * Also makes sure the column widths are never larger than the table's viewport.
      * In Qt, all columns are resizable from the right, but it's not intuitive resizing the last column from the right.
-     * Usually our second to last columns behave as if stretched, and when on strech mode, columns aren't resizable
+     * Usually our second to last columns behave as if stretched, and when on stretch mode, columns aren't resizable
      * interactively or programmatically.
      *
      * This helper object takes care of this issue.
diff --git a/src/qt/modaloverlay.cpp b/src/qt/modaloverlay.cpp
index b573dbe226..249418213f 100644
--- a/src/qt/modaloverlay.cpp
+++ b/src/qt/modaloverlay.cpp
@@ -81,7 +81,7 @@ void ModalOverlay::tipUpdate(int count, const QDateTime& blockDate, double nVeri
     // keep a vector of samples of verification progress at height
     blockProcessTime.push_front(qMakePair(currentDate.toMSecsSinceEpoch(), nVerificationProgress));
 
-    // show progress speed if we have more then one sample
+    // show progress speed if we have more than one sample
     if (blockProcessTime.size() >= 2) {
         double progressDelta = 0;
         double progressPerHour = 0;
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
index 5df1282f73..66e9dd0465 100644
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -91,7 +91,7 @@ SplashScreen::SplashScreen(Qt::WindowFlags f, const NetworkStyle *networkStyle)
 
     pixPaint.setFont(QFont(font, 15*fontFactor));
 
-    // if the version string is to long, reduce size
+    // if the version string is too long, reduce size
     fm = pixPaint.fontMetrics();
     int versionTextWidth  = fm.width(versionText);
     if(versionTextWidth > titleTextWidth+paddingRight-10) {
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index 39ef20c835..b17bc3c91a 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -698,7 +698,7 @@ bool WalletModel::bumpFee(uint256 hash)
     confirmationDialog.exec();
     QMessageBox::StandardButton retval = static_cast<QMessageBox::StandardButton>(confirmationDialog.result());
 
-    // cancel sign&broadcast if users doesn't want to bump the fee
+    // cancel sign&broadcast if user doesn't want to bump the fee
     if (retval != QMessageBox::Yes) {
         return false;
     }
diff --git a/src/random.h b/src/random.h
index ea88670a37..5fe8f2fd04 100644
--- a/src/random.h
+++ b/src/random.h
@@ -32,7 +32,7 @@ void RandAddSeedSleep();
 
 /**
  * Function to gather random data from multiple sources, failing whenever any
- * of those source fail to provide a result.
+ * of those sources fail to provide a result.
  */
 void GetStrongRandBytes(unsigned char* buf, int num);
 
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
index 927b0267ca..ffaba393c0 100644
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -110,7 +110,7 @@ bool static IsValidSignatureEncoding(const std::vector<unsigned char> &sig) {
     //   excluding the sighash byte.
     // * R-length: 1-byte length descriptor of the R value that follows.
     // * R: arbitrary-length big-endian encoded R value. It must use the shortest
-    //   possible encoding for a positive integers (which means no null bytes at
+    //   possible encoding for a positive integer (which means no null bytes at
     //   the start, except a single one when the next byte has its highest bit set).
     // * S-length: 1-byte length descriptor of the S value that follows.
     // * S: arbitrary-length big-endian encoded S value. The same rules apply.
diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp
index d92ab02d6b..1401188a2b 100644
--- a/src/support/lockedpool.cpp
+++ b/src/support/lockedpool.cpp
@@ -184,7 +184,7 @@ void Win32LockedPageAllocator::FreeLocked(void* addr, size_t len)
 
 size_t Win32LockedPageAllocator::GetLimit()
 {
-    // TODO is there a limit on windows, how to get it?
+    // TODO is there a limit on Windows, how to get it?
     return std::numeric_limits<size_t>::max();
 }
 #endif
diff --git a/src/test/addrman_tests.cpp b/src/test/addrman_tests.cpp
index 0d8bd90119..6b188a06b4 100644
--- a/src/test/addrman_tests.cpp
+++ b/src/test/addrman_tests.cpp
@@ -491,7 +491,7 @@ BOOST_AUTO_TEST_CASE(caddrinfo_get_new_bucket)
     //  this test could be a security issue.
     BOOST_CHECK(info1.GetNewBucket(nKey1) != info1.GetNewBucket(nKey2));
 
-    // Test: Ports should not effect bucket placement in the addr
+    // Test: Ports should not affect bucket placement in the addr
     CAddrInfo info2 = CAddrInfo(addr2, source1);
     BOOST_CHECK(info1.GetKey() != info2.GetKey());
     BOOST_CHECK_EQUAL(info1.GetNewBucket(nKey1), info2.GetNewBucket(nKey1));
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
index 36e271295a..de7d8f7b90 100644
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -313,7 +313,7 @@ BOOST_AUTO_TEST_CASE(updatecoins_simulation_test)
                     auto utxod = FindRandomFrom(coinbase_coins);
                     // Reuse the exact same coinbase
                     tx = std::get<0>(utxod->second);
-                    // shouldn't be available for reconnection if its been duplicated
+                    // shouldn't be available for reconnection if it's been duplicated
                     disconnected_coins.erase(utxod->first);
 
                     duplicate_coins.insert(utxod->first);
diff --git a/src/test/cuckoocache_tests.cpp b/src/test/cuckoocache_tests.cpp
index 51ebfc3800..ccd5caacd5 100644
--- a/src/test/cuckoocache_tests.cpp
+++ b/src/test/cuckoocache_tests.cpp
@@ -163,7 +163,7 @@ void test_cache_erase(size_t megabytes)
     for (uint32_t i = (n_insert / 2); i < n_insert; ++i)
         set.insert(hashes_insert_copy[i]);
 
-    /** elements that we marked erased but that are still there */
+    /** elements that we marked as erased but are still there */
     size_t count_erased_but_contained = 0;
     /** elements that we did not erase but are older */
     size_t count_stale = 0;
@@ -303,7 +303,7 @@ void test_cache_generations()
     local_rand_ctx = FastRandomContext(true);
 
     // block_activity models a chunk of network activity. n_insert elements are
-    // adde to the cache. The first and last n/4 are stored for removal later
+    // added to the cache. The first and last n/4 are stored for removal later
     // and the middle n/2 are not stored. This models a network which uses half
     // the signatures of recently (since the last block) added transactions
     // immediately and never uses the other half.
diff --git a/src/test/dbwrapper_tests.cpp b/src/test/dbwrapper_tests.cpp
index 754a86344f..6694401a29 100644
--- a/src/test/dbwrapper_tests.cpp
+++ b/src/test/dbwrapper_tests.cpp
@@ -237,7 +237,7 @@ BOOST_AUTO_TEST_CASE(iterator_ordering)
 }
 
 struct StringContentsSerializer {
-    // Used to make two serialized objects the same while letting them have a different lengths
+    // Used to make two serialized objects the same while letting them have different lengths
     // This is a terrible idea
     std::string str;
     StringContentsSerializer() {}
diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp
index 1766c6a093..19cd3b0963 100644
--- a/src/test/mempool_tests.cpp
+++ b/src/test/mempool_tests.cpp
@@ -523,7 +523,7 @@ BOOST_AUTO_TEST_CASE(MempoolSizeLimitTest)
     pool.addUnchecked(tx6.GetHash(), entry.Fee(1100LL).FromTx(tx6));
     pool.addUnchecked(tx7.GetHash(), entry.Fee(9000LL).FromTx(tx7));
 
-    // we only require this remove, at max, 2 txn, because its not clear what we're really optimizing for aside from that
+    // we only require this to remove, at max, 2 txn, because it's not clear what we're really optimizing for aside from that
     pool.TrimToSize(pool.DynamicMemoryUsage() - 1);
     BOOST_CHECK(pool.exists(tx4.GetHash()));
     BOOST_CHECK(pool.exists(tx6.GetHash()));
diff --git a/src/test/txvalidationcache_tests.cpp b/src/test/txvalidationcache_tests.cpp
index 9ec9d6cba3..1aa54189b6 100644
--- a/src/test/txvalidationcache_tests.cpp
+++ b/src/test/txvalidationcache_tests.cpp
@@ -35,7 +35,7 @@ ToMemPool(CMutableTransaction& tx)
 
 BOOST_FIXTURE_TEST_CASE(tx_mempool_block_doublespend, TestChain100Setup)
 {
-    // Make sure skipping validation of transctions that were
+    // Make sure skipping validation of transactions that were
     // validated going into the memory pool does not allow
     // double-spends in blocks to pass validation when they should not.
 
diff --git a/src/tinyformat.h b/src/tinyformat.h
index d34cfaa94f..14b7cd3026 100644
--- a/src/tinyformat.h
+++ b/src/tinyformat.h
@@ -155,7 +155,7 @@ namespace tfm = tinyformat;
 #endif
 
 #ifdef __APPLE__
-// Workaround OSX linker warning: xcode uses different default symbol
+// Workaround OSX linker warning: Xcode uses different default symbol
 // visibilities for static libs vs executables (see issue #25)
 #   define TINYFORMAT_HIDDEN __attribute__((visibility("hidden")))
 #else
@@ -592,7 +592,7 @@ inline const char* printFormatStringLiteral(std::ostream& out, const char* fmt)
 // Formatting options which can't be natively represented using the ostream
 // state are returned in spacePadPositive (for space padded positive numbers)
 // and ntrunc (for truncating conversions).  argIndex is incremented if
-// necessary to pull out variable width and precision .  The function returns a
+// necessary to pull out variable width and precision.  The function returns a
 // pointer to the character after the end of the current format spec.
 inline const char* streamStateFromFormat(std::ostream& out, bool& spacePadPositive,
                                          int& ntrunc, const char* fmtStart,
diff --git a/src/txmempool.h b/src/txmempool.h
index c6a1bf08ce..08a3421015 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -689,7 +689,7 @@ private:
 };
 
 /** 
- * CCoinsView that brings transactions from a memorypool into view.
+ * CCoinsView that brings transactions from a mempool into view.
  * It does not check for spendings by memory pool transactions.
  * Instead, it provides access to all Coins which are either unspent in the
  * base CCoinsView, or are outputs from any mempool transaction!
diff --git a/src/undo.h b/src/undo.h
index 7aae034de2..673a1f00ef 100644
--- a/src/undo.h
+++ b/src/undo.h
@@ -15,7 +15,7 @@
  *
  *  Contains the prevout's CTxOut being spent, and its metadata as well
  *  (coinbase or not, height). The serialization contains a dummy value of
- *  zero. This is be compatible with older versions which expect to see
+ *  zero. This is compatible with older versions which expect to see
  *  the transaction version there.
  */
 class TxInUndoSerializer
diff --git a/src/util.h b/src/util.h
index e4170d8aa2..aebd2fd590 100644
--- a/src/util.h
+++ b/src/util.h
@@ -136,7 +136,7 @@ template<typename T, typename... Args> static inline void MarkUsed(const T& t, c
 
 // Be conservative when using LogPrintf/error or other things which
 // unconditionally log to debug.log! It should not be the case that an inbound
-// peer can fill up a users disk with debug.log entries.
+// peer can fill up a user's disk with debug.log entries.
 
 #ifdef USE_COVERAGE
 #define LogPrintf(...) do { MarkUsed(__VA_ARGS__); } while(0)
diff --git a/src/validation.cpp b/src/validation.cpp
index bee890437e..614876ea49 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -949,7 +949,7 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
 
         // This transaction should only count for fee estimation if:
         // - it isn't a BIP 125 replacement transaction (may not be widely supported)
-        // - it's not being readded during a reorg which bypasses typical mempool fee limits
+        // - it's not being re-added during a reorg which bypasses typical mempool fee limits
         // - the node is not behind
         // - the transaction is not dependent on any other transactions in the mempool
         bool validForFeeEstimation = !fReplacementTransaction && !bypass_limits && IsCurrentForFeeEstimation() && pool.HasNoInputsOf(tx);
@@ -1852,7 +1852,7 @@ bool CChainState::ConnectBlock(const CBlock& block, CValidationState& state, CBl
     // Once BIP34 activated it was not possible to create new duplicate coinbases and thus other than starting
     // with the 2 existing duplicate coinbase pairs, not possible to create overwriting txs.  But by the
     // time BIP34 activated, in each of the existing pairs the duplicate coinbase had overwritten the first
-    // before the first had been spent.  Since those coinbases are sufficiently buried its no longer possible to create further
+    // before the first had been spent.  Since those coinbases are sufficiently buried it's no longer possible to create further
     // duplicate transactions descending from the known pairs either.
     // If we're on the known chain at height greater than where BIP34 activated, we can save the db accesses needed for the BIP30 check.
 
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 7ad9efff70..3dbc01c068 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2015,7 +2015,7 @@ UniValue listsinceblock(const JSONRPCRequest& request)
             "  ],\n"
             "  \"removed\": [\n"
             "    <structure is the same as \"transactions\" above, only present if include_removed=true>\n"
-            "    Note: transactions that were readded in the active chain will appear as-is in this array, and may thus have a positive confirmation count.\n"
+            "    Note: transactions that were re-added in the active chain will appear as-is in this array, and may thus have a positive confirmation count.\n"
             "  ],\n"
             "  \"lastblock\": \"lastblockhash\"     (string) The hash of the block (target_confirmations-1) from the best block on the main chain. This is typically used to feed back into listsinceblock the next time you call it. So you would generally use a target_confirmations of say 6, so you will be continually re-notified of transactions until they've reached 6 confirmations plus any new ones\n"
             "}\n"
@@ -3578,7 +3578,7 @@ UniValue rescanblockchain(const JSONRPCRequest& request)
                 throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid stop_height");
             }
             else if (pindexStop->nHeight < pindexStart->nHeight) {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, "stop_height must be greater then start_height");
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "stop_height must be greater than start_height");
             }
         }
     }
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index bd5094085e..0d21570858 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1269,7 +1269,7 @@ void CWallet::BlockUntilSyncedToCurrentChain() {
         // chainActive.Tip()...
         // We could also take cs_wallet here, and call m_last_block_processed
         // protected by cs_wallet instead of cs_main, but as long as we need
-        // cs_main here anyway, its easier to just call it cs_main-protected.
+        // cs_main here anyway, it's easier to just call it cs_main-protected.
         LOCK(cs_main);
         const CBlockIndex* initialChainTip = chainActive.Tip();
 
@@ -4186,8 +4186,8 @@ bool CWalletTx::AcceptToMemoryPool(const CAmount& nAbsurdFee, CValidationState&
     // We must set fInMempool here - while it will be re-set to true by the
     // entered-mempool callback, if we did not there would be a race where a
     // user could call sendmoney in a loop and hit spurious out of funds errors
-    // because we think that the transaction they just generated's change is
-    // unavailable as we're not yet aware its in mempool.
+    // because we think that this newly generated transaction's change is
+    // unavailable as we're not yet aware that it is in the mempool.
     bool ret = ::AcceptToMemoryPool(mempool, state, tx, nullptr /* pfMissingInputs */,
                                 nullptr /* plTxnReplaced */, false /* bypass_limits */, nAbsurdFee);
     fInMempool |= ret;