[binutils-gdb] Improve fputs_highlighted by using ui_file::write

[Tom Tromey]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5844bd5a83304e789d0d6c579705ea40562e1318

commit 5844bd5a83304e789d0d6c579705ea40562e1318
Author: Tom Tromey <tom@tromey.com>
Date:   Tue Dec 9 12:17:09 2025 -0700

    Improve fputs_highlighted by using ui_file::write
    
    I noticed that fputs_highlighted writes a single character at a time.
    It's more idiomatic to use ui_file::write.
    
    Approved-By: Andrew Burgess <aburgess@redhat.com>

Diff:
---
 gdb/utils.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/gdb/utils.c b/gdb/utils.c
index 80b08f4e211..cdb167c76cd 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -1921,22 +1921,20 @@ fputs_highlighted (const char *str, const compiled_regex &highlight,
       size_t n_highlight = pmatch.rm_eo - pmatch.rm_so;
 
       /* Output the part before pmatch with current style.  */
-      while (pmatch.rm_so > 0)
+      if (pmatch.rm_so > 0)
 	{
-	  gdb_putc (*str, stream);
-	  pmatch.rm_so--;
-	  str++;
+	  stream->write (str, pmatch.rm_so);
+	  str += pmatch.rm_so;
 	}
 
       /* Output pmatch with the highlight style.  */
-      stream->emit_style_escape (highlight_style.style ());
-      while (n_highlight > 0)
+      if (n_highlight > 0)
 	{
-	  gdb_putc (*str, stream);
-	  n_highlight--;
-	  str++;
+	  stream->emit_style_escape (highlight_style.style ());
+	  stream->write (str, n_highlight);
+	  str += n_highlight;
+	  stream->emit_style_escape (ui_file_style ());
 	}
-      stream->emit_style_escape (ui_file_style ());
     }
 
   /* Output the trailing part of STR not matching HIGHLIGHT.  */