Hide color variables in _pretty_color.sh

These were never intended to be used outside _pretty_color; the fact
that _pretty_color is internal does not mean *its* internal globals do
not need to follow underscore rules.

src/include-bash/_pretty_color.sh

@@ -3,22 +3,22 @@
 shellfu import termcolors
 
 
-PRETTY_COLOR_DEBUG=""
-PRETTY_COLOR_DIE=""
-PRETTY_COLOR_USAGE_IS=""
-PRETTY_COLOR_THINK=""
-PRETTY_COLOR_WARN=""
-PRETTY_COLOR_OFF=""
+_PRETTY_COLOR_DEBUG=""
+_PRETTY_COLOR_DIE=""
+_PRETTY_COLOR_USAGE_IS=""
+_PRETTY_COLOR_THINK=""
+_PRETTY_COLOR_WARN=""
+_PRETTY_COLOR_OFF=""
 
 
 __shellfu__pretty_color__init() {
     test -t 2 || return 0   # stderr is a pipe/file; refrain from colors
-    PRETTY_COLOR_DEBUG="${TERMCOLORS_LBLUE}"
-    PRETTY_COLOR_DIE="${TERMCOLORS_LRED}"
-    PRETTY_COLOR_USAGE_IS="${TERMCOLORS_YELLOW}"
-    PRETTY_COLOR_THINK="${TERMCOLORS_LBLACK}"
-    PRETTY_COLOR_WARN="${TERMCOLORS_LRED}"
-    PRETTY_COLOR_OFF="${TERMCOLORS_NONE}"
+    _PRETTY_COLOR_DEBUG="${TERMCOLORS_LBLUE}"
+    _PRETTY_COLOR_DIE="${TERMCOLORS_LRED}"
+    _PRETTY_COLOR_USAGE_IS="${TERMCOLORS_YELLOW}"
+    _PRETTY_COLOR_THINK="${TERMCOLORS_LBLACK}"
+    _PRETTY_COLOR_WARN="${TERMCOLORS_LRED}"
+    _PRETTY_COLOR_OFF="${TERMCOLORS_NONE}"
 }
 
 
@@ -26,46 +26,46 @@ _pretty__debug() {
     local decor="()"
     $caller_is_main && decor=
     while IFS= read -r line;
-    do echo -ne "${PRETTY_COLOR_DEBUG}debug:$caller$decor:$PRETTY_COLOR_OFF"
+    do echo -ne "${_PRETTY_COLOR_DEBUG}debug:$caller$decor:$_PRETTY_COLOR_OFF"
        echo "$line"; done
 }
 
 
 _pretty__die() {
-    echo -ne "$PRETTY_COLOR_DIE"
+    echo -ne "$_PRETTY_COLOR_DIE"
     while IFS= read -r line;
     do echo "$line"; done
-    echo -ne "$PRETTY_COLOR_OFF"
+    echo -ne "$_PRETTY_COLOR_OFF"
 }
 
 
 _pretty__mkhelp() {
-    echo -ne "$PRETTY_COLOR_USAGE_IS"
+    echo -ne "$_PRETTY_COLOR_USAGE_IS"
     while IFS= read -r line;
     do echo -e "$line"; done
-    echo -ne "$PRETTY_COLOR_OFF"
+    echo -ne "$_PRETTY_COLOR_OFF"
 }
 
 
 _pretty__mkusage() {
-    echo -ne "$PRETTY_COLOR_USAGE_IS"
+    echo -ne "$_PRETTY_COLOR_USAGE_IS"
     while IFS= read -r line;
     do echo -e "$line"; done
-    echo -ne "$PRETTY_COLOR_OFF"
+    echo -ne "$_PRETTY_COLOR_OFF"
 }
 
 
 _pretty__think() {
-    echo -ne "$PRETTY_COLOR_THINK"
+    echo -ne "$_PRETTY_COLOR_THINK"
     while IFS= read -r line;
     do echo "$line"; done
-    echo -ne "$PRETTY_COLOR_OFF"
+    echo -ne "$_PRETTY_COLOR_OFF"
 }
 
 
 _pretty__warn() {
-    echo -ne "$PRETTY_COLOR_WARN"
+    echo -ne "$_PRETTY_COLOR_WARN"
     while IFS= read -r line;
     do echo "$line"; done
-    echo -ne "$PRETTY_COLOR_OFF"
+    echo -ne "$_PRETTY_COLOR_OFF"
 }

tests/shellfu_api/oracle/variables.stdout

@@ -1,9 +1,9 @@
-_pretty_color.PRETTY_COLOR_DEBUG
-_pretty_color.PRETTY_COLOR_DIE
-_pretty_color.PRETTY_COLOR_OFF
-_pretty_color.PRETTY_COLOR_THINK
-_pretty_color.PRETTY_COLOR_USAGE_IS
-_pretty_color.PRETTY_COLOR_WARN
+_pretty_color._PRETTY_COLOR_DEBUG
+_pretty_color._PRETTY_COLOR_DIE
+_pretty_color._PRETTY_COLOR_OFF
+_pretty_color._PRETTY_COLOR_THINK
+_pretty_color._PRETTY_COLOR_USAGE_IS
+_pretty_color._PRETTY_COLOR_WARN
 charmenu.CHARMENU_FILE
 exit.EXIT_ERROR
 exit.EXIT_NO