check-attr -z: a single -z should apply to both input and output

Unless a command has separate --nul-terminated-{input,output}
options, the --nul-terminated-records (-z) option should apply
to both input and output for consistency.  The caller knows that its
input paths may need to be protected for LF, and the program shows
these problematic paths to its output.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-check-attr.txt b/Documentation/git-check-attr.txt
index 5abdbaa51cf58e216bbc63d28039a5abfba01669..760aca9fa9dfe0d80ba28f0c5e59f246724c2fc6 100644 (file)
--- a/Documentation/git-check-attr.txt
+++ b/Documentation/git-check-attr.txt
@@ -31,8 +31,9 @@ OPTIONS
        Read file names from stdin instead of from the command-line.
 
 -z::
-       Only meaningful with `--stdin`; paths are separated with a
-       NUL character instead of a linefeed character.
+       The output format is modified to be machine-parseable.
+       If `--stdin` is also given, input paths are separated
+       with a NUL character instead of a linefeed character.
 
 \--::
        Interpret all preceding arguments as attributes and all following
@@ -48,6 +49,10 @@ OUTPUT
 The output is of the form:
 <path> COLON SP <attribute> COLON SP <info> LF
 
+unless `-z` is in effect, in which case NUL is used as delimiter:
+<path> NUL <attribute> NUL <info> NUL
+
+
 <path> is the path of a file being queried, <attribute> is an attribute
 being queried and <info> can be either:
 

diff --git a/builtin/check-attr.c b/builtin/check-attr.c
index 7cc9b5d94a9e523c99bea1411e7a93adf48012c2..cd46690ec71531cf5fd475814e3423d3f428025d 100644 (file)
--- a/builtin/check-attr.c
+++ b/builtin/check-attr.c
@@ -20,7 +20,7 @@ static const struct option check_attr_options[] = {
        OPT_BOOLEAN(0,  "cached", &cached_attrs, N_("use .gitattributes only from the index")),
        OPT_BOOLEAN(0 , "stdin", &stdin_paths, N_("read file names from stdin")),
        OPT_BOOLEAN('z', NULL, &nul_term_line,
-                   N_("input paths are terminated by a NUL character")),
+                   N_("terminate input and output records by a NUL character")),
        OPT_END()
 };
 
@@ -38,8 +38,16 @@ static void output_attr(int cnt, struct git_attr_check *check,
                else if (ATTR_UNSET(value))
                        value = "unspecified";
 
-               quote_c_style(file, NULL, stdout, 0);
-               printf(": %s: %s\n", git_attr_name(check[j].attr), value);
+               if (nul_term_line) {
+                       printf("%s%c" /* path */
+                              "%s%c" /* attrname */
+                              "%s%c" /* attrvalue */,
+                              file, 0, git_attr_name(check[j].attr), 0, value, 0);
+               } else {
+                       quote_c_style(file, NULL, stdout, 0);
+                       printf(": %s: %s\n", git_attr_name(check[j].attr), value);
+               }
+
        }
 }