From e9a2eb940d6de2afdb70acba1da0e5a412637906 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 8 Oct 2024 06:35:16 +0200
Subject: Add compile_commands.json to .gitignore generated by bdep-new

---
 bdep/new.cxx | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/bdep/new.cxx b/bdep/new.cxx
index 7c0f6f5..be31121 100644
--- a/bdep/new.cxx
+++ b/bdep/new.cxx
@@ -1887,9 +1887,23 @@ cmd_new (cmd_new_options&& o, cli::group_scanner& args)
            << "*.pc"                                                   << '\n';
       }
 
+      // In the future we could use the language specified for an empty
+      // project type to decide whether to add compile_commands.json to
+      // .gitignore (which only makes sense for the C and C++ languages).
+      //
+      bool cdb (true);
+      if (cdb)
+      {
+        if (!pkg || t != type::empty)
+          os <<                                                           '\n';
+        os << "# Compilation database."                                << '\n'
+           << "#"                                                      << '\n'
+           << "compile_commands.json"                                  << '\n';
+      }
+
       // Only print the newline if anything is printed.
       //
-      if (newline && (!pkg || t != type::empty))
+      if (newline && (!pkg || t != type::empty || cdb))
         os <<                                                            '\n';
     };
 
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