[gtkmm] tools/gen_scripts: Skip filename patterns with no match

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 98c27cbf27f285bf95fb1c9fd2a330bb86b0552c
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Sun Nov 6 16:31:02 2016 +0100

    tools/gen_scripts: Skip filename patterns with no match
    
    * tools/gen_scripts/gdk_generate_enums.sh:
    * tools/gen_scripts/gdk_generate_methods.sh:
    * tools/gen_scripts/gtk_generate_enums.sh:
    * tools/gen_scripts/gtk_generate_methods.sh: Skip a filename pattern that
    matches no file. E.g. don't consider it an error if there is no .h file
    in the gtk+/gdk/deprecated directory.
    
    In the previous commit message, I should have mentioned that the modification
    of button.hg fixes bug 759756.

 tools/gen_scripts/gdk_generate_enums.sh   |    1 +
 tools/gen_scripts/gdk_generate_methods.sh |    1 +
 tools/gen_scripts/gtk_generate_enums.sh   |    1 +
 tools/gen_scripts/gtk_generate_methods.sh |    1 +
 4 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/tools/gen_scripts/gdk_generate_enums.sh b/tools/gen_scripts/gdk_generate_enums.sh
index 99e4fd6..51804b3 100755
--- a/tools/gen_scripts/gdk_generate_enums.sh
+++ b/tools/gen_scripts/gdk_generate_enums.sh
@@ -14,6 +14,7 @@ ROOT_DIR="$(dirname "$0")/../.."
 OUT_DIR="$ROOT_DIR/gdk/src"
 
 shopt -s extglob # Enable extended pattern matching
+shopt -s nullglob # Skip a filename pattern that matches no file
 ENUM_PL="$JHBUILD_SOURCES/glibmm/tools/enum.pl"
 # Process files whose names end with .h, but not with private.h.
 # Exclude gtk+/gdk/gdkinternals.h.
diff --git a/tools/gen_scripts/gdk_generate_methods.sh b/tools/gen_scripts/gdk_generate_methods.sh
index 8d7500c..5d0bd85 100755
--- a/tools/gen_scripts/gdk_generate_methods.sh
+++ b/tools/gen_scripts/gdk_generate_methods.sh
@@ -14,6 +14,7 @@ ROOT_DIR="$(dirname "$0")/../.."
 OUT_DIR="$ROOT_DIR/gdk/src"
 
 shopt -s extglob # Enable extended pattern matching
+shopt -s nullglob # Skip a filename pattern that matches no file
 H2DEF_PY="$JHBUILD_SOURCES/glibmm/tools/defs_gen/h2def.py"
 # Process files whose names end with .h, but not with private.h.
 # Exclude gtk+/gdk/gdkinternals.h.
diff --git a/tools/gen_scripts/gtk_generate_enums.sh b/tools/gen_scripts/gtk_generate_enums.sh
index 8e31aa8..627a39b 100755
--- a/tools/gen_scripts/gtk_generate_enums.sh
+++ b/tools/gen_scripts/gtk_generate_enums.sh
@@ -14,6 +14,7 @@ ROOT_DIR="$(dirname "$0")/../.."
 OUT_DIR="$ROOT_DIR/gtk/src"
 
 shopt -s extglob # Enable extended pattern matching
+shopt -s nullglob # Skip a filename pattern that matches no file
 ENUM_PL="$JHBUILD_SOURCES/glibmm/tools/enum.pl"
 # Process files whose names end with .h, but not with private.h.
 $ENUM_PL "$PREFIX"/gtk/!(*private).h "$PREFIX"/gtk/deprecated/!(*private).h > "$OUT_DIR"/gtk_enums.defs
diff --git a/tools/gen_scripts/gtk_generate_methods.sh b/tools/gen_scripts/gtk_generate_methods.sh
index 7a41587..9b3f119 100755
--- a/tools/gen_scripts/gtk_generate_methods.sh
+++ b/tools/gen_scripts/gtk_generate_methods.sh
@@ -14,6 +14,7 @@ ROOT_DIR="$(dirname "$0")/../.."
 OUT_DIR="$ROOT_DIR/gtk/src"
 
 shopt -s extglob # Enable extended pattern matching
+shopt -s nullglob # Skip a filename pattern that matches no file
 H2DEF_PY="$JHBUILD_SOURCES/glibmm/tools/defs_gen/h2def.py"
 # Process files whose names end with .h, but not with private.h.
 $H2DEF_PY "$PREFIX"/gtk/!(*private).h "$PREFIX"/gtk/deprecated/!(*private).h > "$OUT_DIR"/gtk_methods.defs