diff options
Diffstat (limited to 'src/keymap.c')
| -rw-r--r-- | src/keymap.c | 172 |
1 files changed, 148 insertions, 24 deletions
diff --git a/src/keymap.c b/src/keymap.c index 28ff71c01da..29d2ca7ab7e 100644 --- a/src/keymap.c +++ b/src/keymap.c @@ -65,6 +65,9 @@ static Lisp_Object exclude_keys; /* Pre-allocated 2-element vector for Fcommand_remapping to use. */ static Lisp_Object command_remapping_vector; +/* Char table for the backwards-compatibility part in Flookup_key. */ +static Lisp_Object unicode_case_table; + /* Hash table used to cache a reverse-map to speed up calls to where-is. */ static Lisp_Object where_is_cache; /* Which keymaps are reverse-stored in the cache. */ @@ -1027,6 +1030,28 @@ is not copied. */) /* Simple Keymap mutators and accessors. */ +static Lisp_Object +possibly_translate_key_sequence (Lisp_Object key, ptrdiff_t *length) +{ + if (VECTORP (key) && ASIZE (key) == 1 && STRINGP (AREF (key, 0))) + { + /* KEY is on the ["C-c"] format, so translate to internal + format. */ + if (NILP (Ffboundp (Qkbd_valid_p))) + xsignal2 (Qerror, + build_string ("`kbd-valid-p' is not defined, so this syntax can't be used: %s"), + key); + if (NILP (call1 (Qkbd_valid_p, AREF (key, 0)))) + xsignal2 (Qerror, build_string ("Invalid `kbd' syntax: %S"), key); + key = call1 (Qkbd, AREF (key, 0)); + *length = CHECK_VECTOR_OR_STRING (key); + if (*length == 0) + xsignal2 (Qerror, build_string ("Invalid `kbd' syntax: %S"), key); + } + + return key; +} + /* GC is possible in this function if it autoloads a keymap. */ DEFUN ("define-key", Fdefine_key, Sdefine_key, 3, 3, 0, @@ -1050,7 +1075,9 @@ DEF is anything that can be a key's definition: function definition, which should at that time be one of the above, or another symbol whose function definition is used, etc.), a cons (STRING . DEFN), meaning that DEFN is the definition - (DEFN should be a valid definition in its own right), + (DEFN should be a valid definition in its own right) and + STRING is the menu item name (which is used only if the containing + keymap has been created with a menu name, see `make-keymap'), or a cons (MAP . CHAR), meaning use definition of CHAR in keymap MAP, or an extended menu item definition. (See info node `(elisp)Extended Menu Items'.) @@ -1085,6 +1112,8 @@ binding KEY to DEF is added at the front of KEYMAP. */) def = tmp; } + key = possibly_translate_key_sequence (key, &length); + ptrdiff_t idx = 0; while (1) { @@ -1195,6 +1224,8 @@ lookup_key_1 (Lisp_Object keymap, Lisp_Object key, Lisp_Object accept_default) if (length == 0) return keymap; + key = possibly_translate_key_sequence (key, &length); + ptrdiff_t idx = 0; while (1) { @@ -1251,39 +1282,126 @@ recognize the default bindings, just as `read-key-sequence' does. */) return found; /* Menu definitions might use mixed case symbols (notably in old - versions of `easy-menu-define'). We accept this variation for - backwards-compatibility. (Bug#50752) */ - ptrdiff_t key_len = VECTORP (key) ? ASIZE (key) : 0; - if (key_len > 0 && EQ (AREF (key, 0), Qmenu_bar)) + versions of `easy-menu-define'), or use " " instead of "-". + The rest of this function is about accepting these variations for + backwards-compatibility. (Bug#50752) */ + + /* Just skip everything below unless this is a menu item. */ + if (!VECTORP (key) || !(ASIZE (key) > 0) + || !EQ (AREF (key, 0), Qmenu_bar)) + return found; + + /* Initialize the unicode case table, if it wasn't already. */ + if (NILP (unicode_case_table)) + { + unicode_case_table = uniprop_table (intern ("lowercase")); + /* uni-lowercase.el might be unavailable during bootstrap. */ + if (NILP (unicode_case_table)) + return found; + staticpro (&unicode_case_table); + } + + ptrdiff_t key_len = ASIZE (key); + Lisp_Object new_key = make_vector (key_len, Qnil); + + /* Try both the Unicode case table, and the buffer local one. + Otherwise, we will fail for e.g. the "Turkish" language + environment where 'I' does not downcase to 'i'. */ + Lisp_Object tables[2] = {unicode_case_table, Fcurrent_case_table ()}; + for (int tbl_num = 0; tbl_num < 2; tbl_num++) { - Lisp_Object new_key = make_vector (key_len, Qnil); - for (int i = 0; i < key_len; ++i) + /* First, let's try converting all symbols like "Foo-Bar-Baz" to + "foo-bar-baz". */ + for (int i = 0; i < key_len; i++) { Lisp_Object item = AREF (key, i); if (!SYMBOLP (item)) ASET (new_key, i, item); else { - Lisp_Object sym = Fsymbol_name (item); - USE_SAFE_ALLOCA; - unsigned char *dst = SAFE_ALLOCA (SBYTES (sym) + 1); - memcpy (dst, SSDATA (sym), SBYTES (sym)); - /* We can walk the string data byte by byte, because - UTF-8 encoding ensures that no other byte of any - multibyte sequence will ever include a 7-bit byte - equal to an ASCII single-byte character. */ - for (int j = 0; j < SBYTES (sym); ++j) - if (dst[j] >= 'A' && dst[j] <= 'Z') - dst[j] += 'a' - 'A'; /* Convert to lower case. */ - ASET (new_key, i, Fintern (make_multibyte_string ((char *) dst, - SCHARS (sym), - SBYTES (sym)), - Qnil)); - SAFE_FREE (); + Lisp_Object key_item = Fsymbol_name (item); + Lisp_Object new_item; + if (!STRING_MULTIBYTE (key_item)) + new_item = Fdowncase (key_item); + else + { + USE_SAFE_ALLOCA; + ptrdiff_t size = SCHARS (key_item), n; + if (INT_MULTIPLY_WRAPV (size, MAX_MULTIBYTE_LENGTH, &n)) + n = PTRDIFF_MAX; + unsigned char *dst = SAFE_ALLOCA (n); + unsigned char *p = dst; + ptrdiff_t j_char = 0, j_byte = 0; + + while (j_char < size) + { + int ch = fetch_string_char_advance (key_item, + &j_char, &j_byte); + Lisp_Object ch_conv = CHAR_TABLE_REF (tables[tbl_num], + ch); + if (!NILP (ch_conv)) + CHAR_STRING (XFIXNUM (ch_conv), p); + else + CHAR_STRING (ch, p); + p = dst + j_byte; + } + new_item = make_multibyte_string ((char *) dst, + SCHARS (key_item), + SBYTES (key_item)); + SAFE_FREE (); + } + ASET (new_key, i, Fintern (new_item, Qnil)); } } + + /* Check for match. */ found = lookup_key_1 (keymap, new_key, accept_default); + if (!NILP (found) && !NUMBERP (found)) + break; + + /* If we still don't have a match, let's convert any spaces in + our lowercased string into dashes, e.g. "foo bar baz" to + "foo-bar-baz". */ + for (int i = 0; i < key_len; i++) + { + if (!SYMBOLP (AREF (new_key, i))) + continue; + + Lisp_Object lc_key = Fsymbol_name (AREF (new_key, i)); + + /* If there are no spaces in this symbol, just skip it. */ + if (!strstr (SSDATA (lc_key), " ")) + continue; + + USE_SAFE_ALLOCA; + ptrdiff_t size = SCHARS (lc_key), n; + if (INT_MULTIPLY_WRAPV (size, MAX_MULTIBYTE_LENGTH, &n)) + n = PTRDIFF_MAX; + unsigned char *dst = SAFE_ALLOCA (n); + + /* We can walk the string data byte by byte, because UTF-8 + encoding ensures that no other byte of any multibyte + sequence will ever include a 7-bit byte equal to an ASCII + single-byte character. */ + memcpy (dst, SSDATA (lc_key), SBYTES (lc_key)); + for (int i = 0; i < SBYTES (lc_key); ++i) + { + if (dst[i] == ' ') + dst[i] = '-'; + } + Lisp_Object new_it = + make_multibyte_string ((char *) dst, + SCHARS (lc_key), SBYTES (lc_key)); + ASET (new_key, i, Fintern (new_it, Qnil)); + SAFE_FREE (); + } + + /* Check for match. */ + found = lookup_key_1 (keymap, new_key, accept_default); + if (!NILP (found) && !NUMBERP (found)) + break; } + return found; } @@ -2815,7 +2933,10 @@ You type Translation\n\ { if (EQ (start1, BVAR (XBUFFER (buffer), keymap))) { - Lisp_Object msg = build_unibyte_string ("\f\nMajor Mode Bindings"); + Lisp_Object msg = + CALLN (Fformat, + build_unibyte_string ("\f\n`%s' Major Mode Bindings"), + XBUFFER (buffer)->major_mode_); CALLN (Ffuncall, Qdescribe_map_tree, start1, Qt, shadow, prefix, @@ -3308,4 +3429,7 @@ that describe key bindings. That is why the default is nil. */); defsubr (&Stext_char_description); defsubr (&Swhere_is_internal); defsubr (&Sdescribe_buffer_bindings); + + DEFSYM (Qkbd, "kbd"); + DEFSYM (Qkbd_valid_p, "kbd-valid-p"); } |