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Fix assertion violation when invoking help macro at end of help file. &mid function was not safe to call on empty line, same for &mid.

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Minor reformatting of help file to avoid content to be mistaken as section reference by help macro.
This commit is contained in:
Renaud 2023-12-20 13:07:04 +08:00
parent 5b2884b93c
commit 54145a48f8
2 changed files with 10 additions and 22 deletions
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14
emacs.hlp
View File

@ -111,8 +111,8 @@ Pipe command .......... ^X @ Execute buffer ........ not bound
Search forward ........ Meta S :: End string with Meta. Search forward ........ Meta S :: End string with Meta.
Incremental search .... ^X S :: Search next ^X, stop Meta, cancel ^G. Incremental search .... ^X S :: Search next ^X, stop Meta, cancel ^G.
Search reverse ........ ^R Search reverse ........ ^R
Reverse incremental search Hunt forward .......... Alt-S Reverse incremental Hunt forward .......... Alt-S
....................... ^X R Hunt backward ......... Alt-R search ^X R Hunt backward ......... Alt-R
Replace string ........ Meta R Replace string ........ Meta R
Query replace string .. Meta ^R :: Yes/no Y/N, replace rest !, cancel ^G. Query replace string .. Meta ^R :: Yes/no Y/N, replace rest !, cancel ^G.
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
@ -164,9 +164,9 @@ Page overlap .......... $overlap :: # lines, default 0, 0 = 1/3 page
=> FILE NAME COMPLETION => FILE NAME COMPLETION
File name completion can be used with all file commands (find-file, File name completion can be used with all file commands (find-file,
view-file, ...) but it works only under UNIX and MS-DOS. It is invoked view-file, ...). It is invoked by a <Space> or <Tab>. If there exist more
by a <Space> or <Tab>. If there exist more than one possible completions than one possible completions they are displayed one by one. If the file
they are displayed one by one. If the file name contains wild card name contains wild card characters, the name is expanded instead of simple
characters, the name is expanded instead of simple completion. Special completion. Special characters can be entered verbatim by prefixing them
characters can be entered verbatim by prefixing them with ^V (or ^Q). with ^V (or ^Q).
------------------------------------------------------------------------------- -------------------------------------------------------------------------------

18
eval.c
View File

@ -395,13 +395,8 @@ static const char *gtfun( char *fname) {
case UFLEFT: case UFLEFT:
sz1 = strlen( argv[ 0]) ; sz1 = strlen( argv[ 0]) ;
sz = 0 ; sz = 0 ;
for( int i = atoi( argv[ 1]) ; i > 0 ; i -= 1) { for( int i = atoi( argv[ 1]) ; sz < sz1 && i > 0 ; i -= 1)
unicode_t c ;
sz += utf8_to_unicode( argv[ 0], sz, sz1, &c) ; sz += utf8_to_unicode( argv[ 0], sz, sz1, &c) ;
if( sz == sz1)
break ;
}
if( sz >= ressize) { if( sz >= ressize) {
free( result) ; free( result) ;
@ -431,19 +426,12 @@ static const char *gtfun( char *fname) {
case UFMID: case UFMID:
sz1 = strlen( argv[ 0]) ; sz1 = strlen( argv[ 0]) ;
int start = 0 ; int start = 0 ;
for( i = atoi( argv[ 1]) - 1 ; i > 0 ; i -= 1) { for( i = atoi( argv[ 1]) - 1 ; start < sz1 && i > 0 ; i -= 1)
start += utf8_to_unicode( argv[ 0], start, sz1, &c) ; start += utf8_to_unicode( argv[ 0], start, sz1, &c) ;
if( start == sz1)
break ;
}
sz = start ; sz = start ;
if( sz < sz1) for( i = atoi( argv[ 2]) ; sz < sz1 && i > 0 ; i -= 1)
for( i = atoi( argv[ 2]) ; i > 0 ; i -= 1) {
sz += utf8_to_unicode( argv[ 0], sz, sz1, &c) ; sz += utf8_to_unicode( argv[ 0], sz, sz1, &c) ;
if( sz == sz1)
break ;
}
sz -= start ; sz -= start ;
if( sz >= ressize) { if( sz >= ressize) {