1 files changed, 59 insertions, 3 deletions

diff --git a/gdb/ui-style.h b/gdb/ui-style.h
index 77a175d..1ea3556 100644
--- a/gdb/ui-style.h
+++ b/gdb/ui-style.h
@@ -266,7 +266,9 @@ struct ui_file_style
     return (m_foreground == other.m_foreground
 	    && m_background == other.m_background
 	    && m_intensity == other.m_intensity
-	    && m_reverse == other.m_reverse);
+	    && m_reverse == other.m_reverse
+	    && m_italic == other.m_italic
+	    && m_underline == other.m_underline);
   }
 
   bool operator!= (const ui_file_style &other) const
@@ -284,7 +286,9 @@ struct ui_file_style
     return (m_foreground == NONE
 	    && m_background == NONE
 	    && m_intensity == NORMAL
-	    && !m_reverse);
+	    && !m_reverse
+	    && !m_italic
+	    && !m_underline);
   }
 
   /* Return true if this style specified reverse display; false
@@ -330,6 +334,32 @@ struct ui_file_style
     return m_intensity;
   }
 
+  /* Return true if this style specified italic display; false
+     otherwise.  */
+  bool is_italic () const
+  {
+    return m_italic;
+  }
+
+  /* Set/clear the italic display flag.  */
+  void set_italic (bool italic)
+  {
+    m_italic = italic;
+  }
+
+  /* Return true if this style specified underline display; false
+     otherwise.  */
+  bool is_underline () const
+  {
+    return m_underline;
+  }
+
+  /* Set/clear the underline display flag.  */
+  void set_underline (bool underline)
+  {
+    m_underline = underline;
+  }
+
   /* Parse an ANSI escape sequence in BUF, modifying this style.  BUF
      must begin with an ESC character.  Return true if an escape
      sequence was successfully parsed; false otherwise.  In either
@@ -351,14 +381,40 @@ private:
   color m_foreground = NONE;
   color m_background = NONE;
   intensity m_intensity = NORMAL;
+  bool m_italic = false;
+  bool m_underline = false;
   bool m_reverse = false;
 };
 
+/* Possible results for checking an ANSI escape sequence.  */
+enum class ansi_escape_result
+{
+  /* The escape sequence is definitely not recognizable.  */
+  NO_MATCH,
+
+  /* The escape sequence might be recognizable with more input.  */
+  INCOMPLETE,
+
+  /* The escape sequence is definitely recognizable.  */
+  MATCHED,
+};
+
+/* Examine an ANSI escape sequence in BUF.  BUF must begin with an ESC
+   character.  Return a value indicating whether the sequence was
+   recognizable.  If MATCHED is returned, then N_READ is updated to
+   reflect the number of chars read from BUF.  */
+
+extern ansi_escape_result examine_ansi_escape (const char *buf, int *n_read);
+
 /* Skip an ANSI escape sequence in BUF.  BUF must begin with an ESC
    character.  Return true if an escape sequence was successfully
    skipped; false otherwise.  If an escape sequence was skipped,
    N_READ is updated to reflect the number of chars read from BUF.  */
 
-extern bool skip_ansi_escape (const char *buf, int *n_read);
+static inline bool
+skip_ansi_escape (const char *buf, int *n_read)
+{
+  return examine_ansi_escape (buf, n_read) == ansi_escape_result::MATCHED;
+}
 
 #endif /* GDB_UI_STYLE_H */