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-rw-r--r--Documentation/technical/api-parse-options.txt8
-rw-r--r--parse-options.c2
-rwxr-xr-xt/t0040-parse-options.sh28
-rw-r--r--test-parse-options.c3
4 files changed, 24 insertions, 17 deletions
diff --git a/Documentation/technical/api-parse-options.txt b/Documentation/technical/api-parse-options.txt
index 695bd4bf4..27bd701c0 100644
--- a/Documentation/technical/api-parse-options.txt
+++ b/Documentation/technical/api-parse-options.txt
@@ -144,8 +144,12 @@ There are some macros to easily define options:
`OPT_COUNTUP(short, long, &int_var, description)`::
Introduce a count-up option.
- `int_var` is incremented on each use of `--option`, and
- reset to zero with `--no-option`.
+ Each use of `--option` increments `int_var`, starting from zero
+ (even if initially negative), and `--no-option` resets it to
+ zero. To determine if `--option` or `--no-option` was encountered at
+ all, initialize `int_var` to a negative value, and if it is still
+ negative after parse_options(), then neither `--option` nor
+ `--no-option` was seen.
`OPT_BIT(short, long, &int_var, description, mask)`::
Introduce a boolean option.
diff --git a/parse-options.c b/parse-options.c
index 47a919206..312a85dbd 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -110,6 +110,8 @@ static int get_value(struct parse_opt_ctx_t *p,
return 0;
case OPTION_COUNTUP:
+ if (*(int *)opt->value < 0)
+ *(int *)opt->value = 0;
*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
return 0;
diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
index 717a51485..fec3fef9a 100755
--- a/t/t0040-parse-options.sh
+++ b/t/t0040-parse-options.sh
@@ -63,7 +63,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -211,7 +211,7 @@ magnitude: 0
timestamp: 0
string: 123
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -234,7 +234,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -263,7 +263,7 @@ magnitude: 0
timestamp: 0
string: 123
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -302,7 +302,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -322,7 +322,7 @@ magnitude: 0
timestamp: 1
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 1
dry run: no
file: (not set)
@@ -344,7 +344,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -373,7 +373,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -398,7 +398,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -429,7 +429,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -448,7 +448,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -483,7 +483,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 3
dry run: no
file: (not set)
@@ -521,7 +521,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
@@ -540,7 +540,7 @@ magnitude: 0
timestamp: 0
string: (not set)
abbrev: 7
-verbose: 0
+verbose: -1
quiet: 0
dry run: no
file: (not set)
diff --git a/test-parse-options.c b/test-parse-options.c
index 86afa9887..f02c275f3 100644
--- a/test-parse-options.c
+++ b/test-parse-options.c
@@ -7,7 +7,8 @@ static int integer = 0;
static unsigned long magnitude = 0;
static unsigned long timestamp;
static int abbrev = 7;
-static int verbose = 0, dry_run = 0, quiet = 0;
+static int verbose = -1; /* unspecified */
+static int dry_run = 0, quiet = 0;
static char *string = NULL;
static char *file = NULL;
static int ambiguous;