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authorDenys Vlasenko2010-09-05 14:45:38 +0200
committerDenys Vlasenko2010-09-05 14:47:58 +0200
commit36f774a0cd2bf8dd72b192aab93831c5ac0c58f0 (patch)
treeafa0b3d247e4dd163b89b7b61f4e3e0f3143b102 /shell/hush_test/hush-vars/var_bash4.tests
parent701e127f7d892909a58c6f3333e23588ccef9e22 (diff)
downloadbusybox-36f774a0cd2bf8dd72b192aab93831c5ac0c58f0.zip
busybox-36f774a0cd2bf8dd72b192aab93831c5ac0c58f0.tar.gz
hush: add support for ${var/pattern/repl}, conditional on bash compat
function old new delta expand_vars_to_list 2386 2833 +447 expand_string_to_string 69 110 +41 parse_dollar 681 721 +40 hush_main 963 945 -18 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 3/1 up/down: 528/-18) Total: 510 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'shell/hush_test/hush-vars/var_bash4.tests')
-rwxr-xr-xshell/hush_test/hush-vars/var_bash4.tests47
1 files changed, 47 insertions, 0 deletions
diff --git a/shell/hush_test/hush-vars/var_bash4.tests b/shell/hush_test/hush-vars/var_bash4.tests
new file mode 100755
index 0000000..d547061
--- /dev/null
+++ b/shell/hush_test/hush-vars/var_bash4.tests
@@ -0,0 +1,47 @@
+# This testcase demonstrates that backslashes are treated differently
+# in 1st and 2nd parts of ${var/search/repl}:
+# if quoted ("${var/search/repl}"), and repl contains \a (a non-special char),
+# the backslash in repl stays; if unquoted, backslash is removed.
+# But search part does not act like that: \a is always converted to just a,
+# even in quotes.
+#
+# bash4 (and probably bash3 too): "Quoted:" results are different from
+# unquoted and assignment expansions - they have a backslash before z.
+
+v='a*b\*c'
+echo 'Source: ' "$v"
+echo 'Replace str: ' '_\\_\z_'
+
+echo 'Pattern: ' 'single backslash and star: "replace literal star"'
+r=${v/\*/_\\_\z_}
+echo 'In assignment:' "$r"
+echo 'Unquoted: ' ${v/\*/_\\_\z_}
+echo 'Quoted: ' "${v/\*/_\\_\z_}"
+
+echo 'Pattern: ' 'double backslash and star: "replace backslash and everything after it"'
+r=${v/\\*/_\\_\z_}
+echo 'In assignment:' "$r"
+echo 'Unquoted: ' ${v/\\*/_\\_\z_}
+echo 'Quoted: ' "${v/\\*/_\\_\z_}"
+
+echo
+
+v='a\bc'
+echo 'Source: ' "$v"
+echo 'Replace str: ' '_\\_\z_'
+
+echo 'Pattern: ' 'single backslash and b: "replace b"'
+r=${v/\b/_\\_\z_}
+echo 'In assignment:' "$r"
+echo 'Unquoted: ' ${v/\b/_\\_\z_}
+echo 'Quoted: ' "${v/\b/_\\_\z_}"
+
+echo 'Pattern: ' 'double backslash and b: "replace backslash and b"'
+r=${v/\\b/_\\_\z_}
+echo 'In assignment:' "$r"
+echo 'Unquoted: ' ${v/\\b/_\\_\z_}
+echo 'Quoted: ' "${v/\\b/_\\_\z_}"
+
+echo
+
+echo Done: $?