nethack-gwaa-kiwi/nethack
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more tty extmenu option

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Change extcmd_via_menu() so that the code which guards against overflow
when gathering menu entries is always present.  Now only the explanatory
message when overflow is discovered remains conditional upon DEBUG || BETA.
And make MAX_EXT_CMD actually be the maximum number of extended commands
supported by the menu, instead of MAX_EXT_CMD-2 (which was an off-by-one
bug; capacity for MAX_EXT_CMD-1 was available, but the last slot was always
left unused except if/when unchecked overflow occured).
This commit is contained in:
nethack.rankin
2012-04-15 05:10:22 +00:00
parent 2196861cc6
commit 5fda793c67
1 changed files with 8 additions and 6 deletions
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14
src/cmd.c
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@@ -357,7 +357,9 @@ doextlist(VOID_ARGS) /* here after #? - now list all full-word commands */
#define MAX_EXT_CMD 50 /* Change if we ever have > 50 ext cmds */
/*
* This is currently used only by the tty port and is
* controlled via runtime option 'extmenu'
* controlled via runtime option 'extmenu'.
* ``# ?'' is counted towards the limit of the number of commands,
* so we actually support MAX_EXT_CMD-1 "real" extended commands.
*/
int
extcmd_via_menu() /* here after # - now show pick-list of possible commands */
@@ -366,7 +368,7 @@ extcmd_via_menu() /* here after # - now show pick-list of possible commands */
menu_item *pick_list = (menu_item *)0;
winid win;
anything any;
const struct ext_func_tab *choices[MAX_EXT_CMD];
const struct ext_func_tab *choices[MAX_EXT_CMD + 1];
char buf[BUFSZ];
char cbuf[QBUFSZ], prompt[QBUFSZ], fmtstr[20];
int i, n, nchoices, acount;
@@ -384,20 +386,20 @@ extcmd_via_menu() /* here after # - now show pick-list of possible commands */
/* populate choices */
for (efp = extcmdlist; efp->ef_txt; efp++) {
if (!matchlevel || !strncmp(efp->ef_txt, cbuf, matchlevel)) {
choices[i++] = efp;
choices[i] = efp;
if ((int)strlen(efp->ef_desc) > biggest) {
biggest = strlen(efp->ef_desc);
Sprintf(fmtstr, "%%-%ds", biggest + 15);
}
if (++i > MAX_EXT_CMD) {
# if defined(DEBUG) || defined(BETA)
if (i >= MAX_EXT_CMD - 2) {
impossible(
"Exceeded %d extended commands in doextcmd() menu; 'extmenu' disabled.",
MAX_EXT_CMD - 2);
MAX_EXT_CMD);
# endif /* DEBUG || BETA */
iflags.extmenu = 0;
return -1;
}
# endif /* DEBUG || BETA */
}
}
choices[i] = (struct ext_func_tab *)0;