fix ocr for High Sierra

macos-guest-virtualbox.sh

@@ -2,7 +2,7 @@
 # Push-button installer of macOS on VirtualBox
 # (c) myspaghetti, licensed under GPL2.0 or higher
 # url: https://github.com/myspaghetti/macos-virtualbox
-# version 0.97.3
+# version 0.97.4
 
 #       Dependencies: bash  coreutils  gzip  unzip  wget  xxd  dmg2img
 #  Optional features: tesseract-ocr  tesseract-ocr-eng
@@ -1494,8 +1494,8 @@ function prompt_lang_utils_terminal() {
         animated_please_wait 30
         for i in $(seq 1 60); do  # try automatic ocr for about 5 minutes
             VBoxManage controlvm "${vm_name}" screenshotpng "${vm_name}_screenshot.png" 2>&1 1>/dev/null
-            ocr="$(tesseract "${vm_name}_screenshot.png" - --dpi 70 -l eng 2>/dev/null)"
-            regex='Language|English'  # for zsh quoted regex compatibility
+            ocr="$(tesseract "${vm_name}_screenshot.png" - --psm 11 --dpi 72 -l eng 2>/dev/null)"
+            regex='Language|English|Fran.ais'  # for zsh quoted regex compatibility
             if [[ "${ocr}" =~ ${regex} ]]; then
                 animated_please_wait 20
                 send_enter
@@ -1505,7 +1505,8 @@ function prompt_lang_utils_terminal() {
                 kbspecial='CTRLprs F2 CTRLrls u ENTER t ENTER'  # start Terminal
                 send_special
             fi
-            if [[ "${ocr}" =~ Terminal\ Shell ]]; then
+            regex='Terminal.Shell|Terminal.*sh.?-'  # for zsh quoted regex compatibility
+            if [[ "${ocr}" =~ ${regex} ]]; then
                 sleep 2
                 return
             fi