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[PATCH] completion: bash: improve alias loop detection

From
Felipe Contreras <felipe.contreras@gmail.com>
Date
Nov 12, 2020, 22:34 UTC
Message-ID
<20201112223452.1526315-1-felipe.contreras@gmail.com>

It is possible for the name of an alias to end with the name of another alias, in which case the code will incorrectly detect a loop.

We can fix that by adding an extra space between words.
Suggested-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 contrib/completion/git-completion.bash | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index ce0dc1e0f8..cd2a02bafd 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1121,16 +1121,17 @@ __git_pretty_aliases ()
 # __git_aliased_command requires 1 argument
 __git_aliased_command ()
 {
-	local cur=$1 list word cmdline
+	local cur=$1 last list word cmdline
 
 	while [[ -n "$cur" ]]; do
-		if [[ "$list" == *"$cur "* ]]; then
+		if [[ "$list" == *" $cur "* ]]; then
 			# loop detected
 			return
 		fi
 
 		cmdline=$(__git config --get "alias.$cur")
-		list="$cur $list"
+		list=" $cur $list"
+		last=$cur
 		cur=
 
 		for word in $cmdline; do
@@ -1154,7 +1155,7 @@ __git_aliased_command ()
 		done
 	done
 
-	cur="${list%% *}"
+	cur=$last
 	if [[ "$cur" != "$1" ]]; then
 		echo "$cur"
 	fi
-- 
2.29.2
Next: Junio C Hamano
Message 1 of 3 in “completion: bash: improve alias loop detection”
  1. completion: bash: improve alias loop detectionFelipe Contreras, Nov 12, 2020
  2. Junio C HamanoNov 17, 2020
  3. Felipe ContrerasNov 17, 2020

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