From: Johannes Schindelin <johannes.schinde...@gmx.de>

We take pains to determine the longest command beforehand, so that we
can align the category column after printing the command names.

However, then we re-use that value when printing the aliases. If any
alias name is longer than the longest command name, we consequently try
to add a negative number of spaces (but `mput_char()` does not expect
any negative values and simply decrements until the value is 0, i.e.
it tries to add close to 2**31 spaces).

Let's fix this by adjusting the `longest` variable before printing the
aliases.

This fixes https://github.com/git-for-windows/git/issues/1975.

Signed-off-by: Johannes Schindelin <johannes.schinde...@gmx.de>
---
 help.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/help.c b/help.c
index 4745b32299..ff05fd22df 100644
--- a/help.c
+++ b/help.c
@@ -83,8 +83,9 @@ static void print_command_list(const struct cmdname_help 
*cmds,
 
        for (i = 0; cmds[i].name; i++) {
                if (cmds[i].category & mask) {
+                       size_t len = strlen(cmds[i].name);
                        printf("   %s   ", cmds[i].name);
-                       mput_char(' ', longest - strlen(cmds[i].name));
+                       mput_char(' ', longest > len ? longest - len : 1);
                        puts(_(cmds[i].help));
                }
        }
@@ -526,6 +527,13 @@ void list_all_cmds_help(void)
 
        git_config(get_alias, &alias_list);
        string_list_sort(&alias_list);
+
+       for (i = 0; i < alias_list.nr; i++) {
+               size_t len = strlen(alias_list.items[i].string);
+               if (longest < len)
+                       longest = len;
+       }
+
        if (alias_list.nr) {
                printf("\n%s\n", _("Command aliases"));
                ALLOC_ARRAY(aliases, alias_list.nr + 1);
-- 
gitgitgadget

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