Teach builtin-notes to remove empty notes

diff --git a/builtin-config.c b/builtin-config.c
index a2d656edb383da47fb3622f1f7c2d1524285ac00..2e3ef911d6d6682bc2f71ea912b05768fb6298be 100644 (file)
--- a/builtin-config.c
+++ b/builtin-config.c
@@ -45,6 +45,7 @@ static int end_null;
 #define TYPE_BOOL (1<<0)
 #define TYPE_INT (1<<1)
 #define TYPE_BOOL_OR_INT (1<<2)
+#define TYPE_PATH (1<<3)
 
 static struct option builtin_config_options[] = {
        OPT_GROUP("Config file location"),
@@ -69,6 +70,7 @@ static struct option builtin_config_options[] = {
        OPT_BIT(0, "bool", &types, "value is \"true\" or \"false\"", TYPE_BOOL),
        OPT_BIT(0, "int", &types, "value is decimal number", TYPE_INT),
        OPT_BIT(0, "bool-or-int", &types, "value is --bool or --int", TYPE_BOOL_OR_INT),
+       OPT_BIT(0, "path", &types, "value is a path (file or directory name)", TYPE_PATH),
        OPT_GROUP("Other"),
        OPT_BOOLEAN('z', "null", &end_null, "terminate values with NUL byte"),
        OPT_END(),
@@ -94,6 +96,7 @@ static int show_config(const char *key_, const char *value_, void *cb)
 {
        char value[256];
        const char *vptr = value;
+       int must_free_vptr = 0;
        int dup_error = 0;
 
        if (!use_key_regexp && strcmp(key_, key))
@@ -123,6 +126,9 @@ static int show_config(const char *key_, const char *value_, void *cb)
                        vptr = v ? "true" : "false";
                else
                        sprintf(value, "%d", v);
+       } else if (types == TYPE_PATH) {
+               git_config_pathname(&vptr, key_, value_);
+               must_free_vptr = 1;
        }
        else
                vptr = value_?value_:"";
@@ -133,6 +139,12 @@ static int show_config(const char *key_, const char *value_, void *cb)
        }
        else
                printf("%s%c", vptr, term);
+       if (must_free_vptr)
+               /* If vptr must be freed, it's a pointer to a
+                * dynamically allocated buffer, it's safe to cast to
+                * const.
+               */
+               free((char *)vptr);
 
        return 0;
 }
@@ -215,7 +227,13 @@ static char *normalize_value(const char *key, const char *value)
        if (!value)
                return NULL;
 
-       if (types == 0)
+       if (types == 0 || types == TYPE_PATH)
+               /*
+                * We don't do normalization for TYPE_PATH here: If
+                * the path is like ~/foobar/, we prefer to store
+                * "~/foobar/" in the config file, and to expand the ~
+                * when retrieving the value.
+                */
                normalized = xstrdup(value);
        else {
                normalized = xmalloc(64);