Overhaul Bash completion scripts

Some general changes:

* Apply case sensitivity switching in more contexts, using a dynamically
loaded helper function
* Use array counters for appending to COMPREPLY where possible
* Lots more short-circuiting to limit structural depth

These changes are expansive and there will definitely be bugs.

1 files changed, 12 insertions, 0 deletions

diff --git a/bash/bash_completion.d/_completion_ignore_case.bash b/bash/bash_completion.d/_completion_ignore_case.bash
new file mode 100644
index 00000000..fe8208fc
--- /dev/null
+++ b/bash/bash_completion.d/_completion_ignore_case.bash
@@ -0,0 +1,12 @@
+# Return whether to ignore case for filename completion
+_completion_ignore_case() {
+
+    # Check Readline settings for case-insensitive matching
+    while read -r _ set ; do
+        [[ $set == 'completion-ignore-case on' ]] || continue
+        return 0
+    done < <(bind -v)
+    
+    # Didn't find it, stay case-sensitive
+    return 1
+}