Merge #18922: gui: Do not translate InitWarning messages in debug.log

78be8d97d3d750fcfbbe509a72639b7b30b7bd18 util: Drop OpOriginal() and OpTranslated() (Hennadii Stepanov)
da16f95c3fecf4ee1e9a1dc4333b0b92cd981afd gui: Do not translate InitWarning messages in debug.log (Hennadii Stepanov)
4c9b9a4882e68835f16a52f1f0657efe47e589b5 util: Enhance Join() (Hennadii Stepanov)
fe05dd0611cfc2929a7fdec04ca5948bccf0233b util: Enhance bilingual_str (Hennadii Stepanov)

Pull request description:

  This PR forces the `bitcoin-qt` to write `InitWarning()` messages to the `debug.log` file in untranslated form, i.e., in English.

  On master (376294cde6b1588cb17055d8fde567eaf5848c3c):
  ```
  $ ./src/qt/bitcoin-qt -lang=nl -debug=vladidation -printtoconsole | grep 'vladi'
  Warning: Niet-ondersteunde logcategorie -debug=vladidation.
  2020-05-09T12:39:59Z Warning: Niet-ondersteunde logcategorie -debug=vladidation.
  2020-05-09T12:40:02Z Command-line arg: debug="vladidation"
  ```

  With this PR:
  ```
  $ ./src/qt/bitcoin-qt -lang=nl -debug=vladidation -printtoconsole | grep 'vladi'
  Warning: Unsupported logging category -debug=vladidation.
  2020-05-09T12:42:04Z Warning: Unsupported logging category -debug=vladidation.
  2020-05-09T12:42:35Z Command-line arg: debug="vladidation"
  ```

  ![Screenshot from 2020-05-09 15-42-31](https://user-images.githubusercontent.com/32963518/81474073-c7a50e00-920b-11ea-8775-c41122dacafe.png)

  Related to #16218.

ACKs for top commit:
  laanwj:
    ACK 78be8d97d3d750fcfbbe509a72639b7b30b7bd18
  jonasschnelli:
    utACK 78be8d97d3d750fcfbbe509a72639b7b30b7bd18
  MarcoFalke:
    ACK 78be8d97d3d750fcfbbe509a72639b7b30b7bd18 📢

Tree-SHA512: 48e9ecd23c4dd8ec262e3eb94f8e30944bcc9c6c163245fb837b2e0c484d4d0b4f47f7abc638c14edc27d635d340ba3ee4ba4506b062399e9cf59a1564c98755

2 files changed, 2 insertions, 2 deletions

diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
index e1a528d99c..d8e459a8e8 100644
--- a/src/interfaces/chain.cpp
+++ b/src/interfaces/chain.cpp
@@ -344,7 +344,7 @@ public:
     bool shutdownRequested() override { return ShutdownRequested(); }
     int64_t getAdjustedTime() override { return GetAdjustedTime(); }
     void initMessage(const std::string& message) override { ::uiInterface.InitMessage(message); }
-    void initWarning(const std::string& message) override { InitWarning(message); }
+    void initWarning(const bilingual_str& message) override { InitWarning(message); }
     void initError(const bilingual_str& message) override { InitError(message); }
     void showProgress(const std::string& title, int progress, bool resume_possible) override
     {
diff --git a/src/interfaces/chain.h b/src/interfaces/chain.h
index 77b315b195..7dfc77db7b 100644
--- a/src/interfaces/chain.h
+++ b/src/interfaces/chain.h
@@ -225,7 +225,7 @@ public:
     virtual void initMessage(const std::string& message) = 0;
 
     //! Send init warning.
-    virtual void initWarning(const std::string& message) = 0;
+    virtual void initWarning(const bilingual_str& message) = 0;
 
     //! Send init error.
     virtual void initError(const bilingual_str& message) = 0;