Auto-intense color

Terminals seem to expect 'bold or intensity' to imply intense color.

There are certain terminals that steadfastly refuse to do bold and intense. So implement the logic on behalf of
the remote terminal.

Commonly, UEFI setup menus request bold white text on white background. This fixes such menus to be readable by explicitly requesting intense white foreground rather than normal background. For example, the kitty terminal has no 'intense on bold feature.

confluent_client/bin/confetty

@@ -45,6 +45,7 @@ import math
 import getpass
 import optparse
 import os
+import re
 import select
 import shlex
 import signal
@@ -969,6 +970,9 @@ def main():
                     sys.stdout.write('Lost connection to server')
     quitconfetty(fullexit=True)
 
+sgr_re = re.compile(r'(\x1b\[[0-9;]*m)')
+sgr_parameters_re = re.compile(r'\x1b\[([0-9;]*)m')
+
 def consume_termdata(fh, bufferonly=False):
     global clearpowermessage
     try:
@@ -979,7 +983,27 @@ def consume_termdata(fh, bufferonly=False):
         updatestatus(data)
         return ''
     if data is not None:
-        data = client.stringify(data)
+        indata = client.stringify(data)
+        data = ''
+        for segment in sgr_re.split(indata):
+            if sgr_re.match(segment):  # it is an sgr, analyze, maybe replace
+                params = []
+                bold = False
+                for parameters in sgr_parameters_re.findall(segment):
+                    for param in parameters.split(';'):
+                        if param == '1':
+                            bold = True
+                        params.append(param)  
+                for idx, param in enumerate(params):
+                    try:
+                        ival = int(param)
+                    except ValueError:
+                        continue
+                    if bold and (30 <= ival <= 37):
+                        ival += 60
+                        params[idx] = str(ival)
+                segment = '\x1b[' + ';'.join(str(p) for p in params) + 'm'
+            data += segment
         if clearpowermessage:
             sys.stdout.write("\x1b[2J\x1b[;H")
             clearpowermessage = False