Benno Schulenberg wrote:
> Attached patch prints the builtin commands alphabetically per
> column and uses a total width of 80 characters.
Here is a better patch. It also puts a ">" in the last column
position of the strings that are longer than the available width.
To find the width of the current terminal I will need some help,
though. Or if you think a variable width isn't worth the trouble,
just leave out the two width-limiting lines .
The second patch improves the summary line of the 'variables' item
a bit, especially when the column width is somewhat limited.
Benno
diff -ur bash-3.2.orig/builtins/help.def bash-3.2.new/builtins/help.def
--- bash-3.2.orig/builtins/help.def 2004-12-30 19:59:55.000000000 +0100
+++ bash-3.2.new/builtins/help.def 2006-12-20 18:39:20.000000000 +0100
@@ -175,8 +175,8 @@
static void
show_builtin_command_help ()
{
- int i, j;
- char blurb[36];
+ int i, j, k, height, width;
+ char blurb[71];
printf (
_("These shell commands are defined internally. Type `help' to see this list.\n\
@@ -187,21 +187,26 @@
A star (*) next to a name means that the command is disabled.\n\
\n"));
- for (i = 0; i < num_shell_builtins; i++)
+ height = (num_shell_builtins + 1) / 2;
+ width = 40; /* XXX should use half of terminal width instead */
+ if (width > 70)
+ width = 70; /* limit column width to this maximum */
+
+ for (i = 0; i < height; i++)
{
QUIT;
- blurb[0] = (shell_builtins[i].flags & BUILTIN_ENABLED) ? ' ' : '*';
- strncpy (blurb + 1, shell_builtins[i].short_doc, 34);
- blurb[35] = '\0';
- printf ("%s", blurb);
-
- if (i % 2)
- printf ("\n");
- else
- for (j = strlen (blurb); j < 35; j++)
- putc (' ', stdout);
+ for (k = i; k < num_shell_builtins; k += height) /* two columns */
+ {
+ blurb[0] = (shell_builtins[k].flags & BUILTIN_ENABLED) ? ' ' : '*';
+ strncpy (blurb + 1, shell_builtins[k].short_doc, width - 1);
+ if (strlen (shell_builtins[k].short_doc) >= width)
+ blurb[width - 1] = '>'; /* indicate truncated string */
+ blurb[width] = '\0';
+ for (j = strlen (blurb); j < width; j++)
+ blurb[j]=' '; /* pad out any remaining width with spaces */
+ printf ("%s", blurb);
+ }
+ printf ("\n");
}
- if (i % 2)
- printf ("\n");
}
#endif /* HELP_BUILTIN */
diff -ur bash-3.2.orig/builtins/reserved.def bash-3.2.new/builtins/reserved.def
--- bash-3.2.orig/builtins/reserved.def 2006-03-07 20:30:00.000000000 +0100
+++ bash-3.2.new/builtins/reserved.def 2006-12-20 19:08:20.000000000 +0100
@@ -145,7 +145,7 @@
$BUILTIN variables
$DOCNAME variable_help
-$SHORT_DOC variables - Some variable names and meanings
+$SHORT_DOC variables - Names and meanings of some variables
BASH_VERSION Version information for this Bash.
CDPATH A colon-separated list of directories to search
for directries given as arguments to `cd'.
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