If someone runs "git st", the command "git status" is not suggested
because it's not one of the closest levenshtein-neighbour.
Reserve the distance of 0 for common commands where the entered command
is a prefixe, as these are often more likely to be what the user meant.
This way, "git status" is the first suggestion, while a list of possible
typos are still suggested as well.
Signed-off-by: Erik Faye-Lund <kusmabite@xxxxxxxxx>
---
I guess something like this should do the trick. Thoughts?
Makefile | 2 ++
help.c | 23 +++++++++++++++++------
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/Makefile b/Makefile
index 1f1ce04..d6ba349 100644
--- a/Makefile
+++ b/Makefile
@@ -1611,6 +1611,8 @@ git$X: git.o $(BUILTIN_OBJS) $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ git.o \
$(BUILTIN_OBJS) $(ALL_LDFLAGS) $(LIBS)
+help.o: common-cmds.h
+
builtin/help.o: common-cmds.h
builtin/help.s builtin/help.o: EXTRA_CPPFLAGS = \
'-DGIT_HTML_PATH="$(htmldir_SQ)"' \
diff --git a/help.c b/help.c
index 7f4928e..dc76a62 100644
--- a/help.c
+++ b/help.c
@@ -3,6 +3,7 @@
#include "exec_cmd.h"
#include "levenshtein.h"
#include "help.h"
+#include "common-cmds.h"
/* most GUI terminals set COLUMNS (although some don't export it) */
static int term_columns(void)
@@ -298,7 +299,7 @@ static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old)
}
/* An empirically derived magic number */
-#define SIMILAR_ENOUGH(x) ((x) < 6)
+#define SIMILAR_ENOUGH(x) ((x) < 7)
const char *help_unknown_cmd(const char *cmd)
{
@@ -320,9 +321,16 @@ const char *help_unknown_cmd(const char *cmd)
uniq(&main_cmds);
/* This reuses cmdname->len for similarity index */
- for (i = 0; i < main_cmds.cnt; ++i)
- main_cmds.names[i]->len =
+ for (i = 0; i < main_cmds.cnt; ++i) {
+ main_cmds.names[i]->len = 1 +
levenshtein(cmd, main_cmds.names[i]->name, 0, 2, 1, 4);
+ for (n = 0; n < ARRAY_SIZE(common_cmds); ++n) {
+ if (!strcmp(main_cmds.names[i]->name,
+ common_cmds[n].name) &&
+ !prefixcmp(main_cmds.names[i]->name, cmd))
+ main_cmds.names[i]->len = 0;
+ }
+ }
qsort(main_cmds.names, main_cmds.cnt,
sizeof(*main_cmds.names), levenshtein_compare);
@@ -330,9 +338,12 @@ const char *help_unknown_cmd(const char *cmd)
if (!main_cmds.cnt)
die ("Uh oh. Your system reports no Git commands at all.");
- best_similarity = main_cmds.names[0]->len;
- n = 1;
- while (n < main_cmds.cnt && best_similarity == main_cmds.names[n]->len)
+ n = 0;
+ do {
+ best_similarity = main_cmds.names[n++]->len;
+ } while (!best_similarity);
+ n++;
+ while (n < main_cmds.cnt && best_similarity >= main_cmds.names[n]->len)
++n;
if (autocorrect && n == 1 && SIMILAR_ENOUGH(best_similarity)) {
const char *assumed = main_cmds.names[0]->name;
--
1.7.3.2
--
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