[PATCH] diff: allow unstuck arguments with --diff-algorithm

[PATCH] diff: allow unstuck arguments with --diff-algorithm

[John Keeping]

The argument to --diff-algorithm is mandatory, so there is no reason to
require the argument to be stuck to the option with '='.  Change this
for consistency with other Git commands.

Note that this doesi not change the handling of diff-algorithm in
merge-recursive.c since the primary interface to that is via the -X
option to 'git merge' where the unstuck form does not make sense.

Signed-off-by: John Keeping <john@keeping.me.uk>
---
 diff.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/diff.c b/diff.c
index db952a5..e0152f8 100644
--- a/diff.c
+++ b/diff.c
@@ -3596,8 +3596,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 		options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
 	else if (!strcmp(arg, "--histogram"))
 		options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
-	else if (!prefixcmp(arg, "--diff-algorithm=")) {
-		long value = parse_algorithm_value(arg+17);
+	else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
+		long value = parse_algorithm_value(optarg);
 		if (value < 0)
 			return error("option diff-algorithm accepts \"myers\", "
 				     "\"minimal\", \"patience\" and \"histogram\"");
@@ -3605,6 +3605,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 		DIFF_XDL_CLR(options, NEED_MINIMAL);
 		options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
 		options->xdl_opts |= value;
+		return argcount;
 	}
 
 	/* flags options */
-- 
1.8.2.540.gf023cfe

Re: [PATCH] diff: allow unstuck arguments with --diff-algorithm

[Thomas Rast]

John Keeping <john@keeping.me.uk> writes:

> The argument to --diff-algorithm is mandatory, so there is no reason to
> require the argument to be stuck to the option with '='.  Change this
> for consistency with other Git commands.
>
> Note that this doesi not change the handling of diff-algorithm in
                     ^
strayi ;-)

> merge-recursive.c since the primary interface to that is via the -X
> option to 'git merge' where the unstuck form does not make sense.
>
> Signed-off-by: John Keeping <john@keeping.me.uk>
> ---
>  diff.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/diff.c b/diff.c
> index db952a5..e0152f8 100644
> --- a/diff.c
> +++ b/diff.c
> @@ -3596,8 +3596,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
>  		options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
>  	else if (!strcmp(arg, "--histogram"))
>  		options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
> -	else if (!prefixcmp(arg, "--diff-algorithm=")) {
> -		long value = parse_algorithm_value(arg+17);
> +	else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
> +		long value = parse_algorithm_value(optarg);
>  		if (value < 0)
>  			return error("option diff-algorithm accepts \"myers\", "
>  				     "\"minimal\", \"patience\" and \"histogram\"");
> @@ -3605,6 +3605,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
>  		DIFF_XDL_CLR(options, NEED_MINIMAL);
>  		options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
>  		options->xdl_opts |= value;
> +		return argcount;
>  	}
>  
>  	/* flags options */

-- 
Thomas Rast
trast@{inf,student}.ethz.ch

[PATCH v2] diff: allow unstuck arguments with --diff-algorithm

[John Keeping]

The argument to --diff-algorithm is mandatory, so there is no reason to
require the argument to be stuck to the option with '='.  Change this
for consistency with other Git commands.

Note that this does not change the handling of diff-algorithm in
merge-recursive.c since the primary interface to that is via the -X
option to 'git merge' where the unstuck form does not make sense.

Signed-off-by: John Keeping <john@keeping.me.uk>
---
On Fri, Apr 05, 2013 at 01:43:16PM +0200, Thomas Rast wrote:
> John Keeping <john@keeping.me.uk> writes:
> 
> > The argument to --diff-algorithm is mandatory, so there is no reason to
> > require the argument to be stuck to the option with '='.  Change this
> > for consistency with other Git commands.
> >
> > Note that this doesi not change the handling of diff-algorithm in
>                      ^
> strayi ;-)

Thanks.

 diff.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/diff.c b/diff.c
index db952a5..e0152f8 100644
--- a/diff.c
+++ b/diff.c
@@ -3596,8 +3596,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 		options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
 	else if (!strcmp(arg, "--histogram"))
 		options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
-	else if (!prefixcmp(arg, "--diff-algorithm=")) {
-		long value = parse_algorithm_value(arg+17);
+	else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
+		long value = parse_algorithm_value(optarg);
 		if (value < 0)
 			return error("option diff-algorithm accepts \"myers\", "
 				     "\"minimal\", \"patience\" and \"histogram\"");
@@ -3605,6 +3605,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
 		DIFF_XDL_CLR(options, NEED_MINIMAL);
 		options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
 		options->xdl_opts |= value;
+		return argcount;
 	}
 
 	/* flags options */
-- 
1.8.2.540.gf023cfe