docs: Clarify --evict-older-than semantics

Closes #1292.

diff --git a/doc/MANUAL.adoc b/doc/MANUAL.adoc
index d353575ee9868e43e33a58ab5fbcba2273dde42b..28922e08951f96e924c23fc1210ccf094db11fc8 100644 (file)
--- a/doc/MANUAL.adoc
+++ b/doc/MANUAL.adoc
@@ -84,13 +84,14 @@ documentation.
 
 *-c*, *--cleanup*::
 
-    Clean up the cache by removing old cached files until the specified file
-    number and cache size limits are not exceeded. This also recalculates the
-    cache file count and size totals. Normally, there is no need to initiate
-    cleanup manually as ccache keeps the cache below the specified limits at
-    runtime and keeps statistics up to date on each compilation. Forcing a
-    cleanup is mostly useful if you have modified the cache contents manually or
-    believe that the cache size statistics may be inaccurate.
+    Clean up the cache by removing not recently used cached files until the
+    specified file number and cache size limits are not exceeded. This also
+    recalculates the cache file count and size totals. Normally, there is no
+    need to initiate cleanup manually as ccache keeps the cache below the
+    specified limits at runtime and keeps statistics up to date on each
+    compilation. Forcing a cleanup is mostly useful if you have modified the
+    cache contents manually or believe that the cache size statistics may be
+    inaccurate.
 
 *-C*, *--clear*::
 
@@ -118,9 +119,9 @@ documentation.
 
 *--evict-older-than* _AGE_::
 
-    Remove files older than _AGE_ from the cache. _AGE_ should be an unsigned
-    integer with a `d` (days) or `s` (seconds) suffix. If combined with
-    `--evict-namespace`, only remove old files within that namespace.
+    Remove files used less recently than _AGE_ from the cache. _AGE_ should be
+    an unsigned integer with a `d` (days) or `s` (seconds) suffix. If combined
+    with `--evict-namespace`, only remove files within that namespace.
 
 *-h*, *--help*::
 
@@ -201,8 +202,8 @@ documentation.
 
 *--trim-dir* _PATH_::
 
-    Remove old files from directory _PATH_ until it is at most the size
-    specified by `--trim-max-size`.
+    Remove not recently used files from directory _PATH_ until it is at most the
+    size specified by `--trim-max-size`.
 +
 WARNING: Don't use this option to trim the local cache. To trim the local cache
 directory to a certain size, use `CCACHE_MAXSIZE=_SIZE_ ccache -c`.

diff --git a/src/core/mainoptions.cpp b/src/core/mainoptions.cpp
index e2c22b954ce97335872ffafae91a5277615c6c3e..2789876ff1d458c5ad77fd98e3e4aa1728cb591a 100644 (file)
--- a/src/core/mainoptions.cpp
+++ b/src/core/mainoptions.cpp
@@ -98,9 +98,9 @@ constexpr const char USAGE_TEXT[] =
     In the third form, ccache is masquerading as the compiler.
 
 Common options:
-    -c, --cleanup              delete old files and recalculate size counters
-                               (normally not needed as this is done
-                               automatically)
+    -c, --cleanup              delete not recently used files and recalculate
+                               size counters (normally not needed as this is
+                               done automatically)
     -C, --clear                clear the cache completely (except configuration)
         --config-path PATH     operate on configuration file PATH instead of the
                                default
@@ -108,8 +108,9 @@ Common options:
                                default
         --evict-namespace NAMESPACE
                                remove files created in namespace NAMESPACE
-        --evict-older-than AGE remove files older than AGE (unsigned integer
-                               with a d (days) or s (seconds) suffix)
+        --evict-older-than AGE remove files used less recently than AGE
+                               (unsigned integer with a d (days) or s (seconds)
+                               suffix)
     -F, --max-files NUM        set maximum number of files in cache to NUM (use
                                0 for no limit)
     -M, --max-size SIZE        set maximum size of cache to SIZE (use 0 for no
@@ -137,10 +138,10 @@ Common options:
     -V, --version              print version and copyright information
 
 Options for remote file-based storage:
-        --trim-dir PATH        remove old files from directory PATH until it is
-                               at most the size specified by --trim-max-size
-                               (note: don't use this option to trim the local
-                               cache)
+        --trim-dir PATH        remove not recently used files from directory
+                               PATH until it is at most the size specified by
+                               --trim-max-size (note: don't use this option to
+                               trim the local cache)
         --trim-max-size SIZE   specify the maximum size for --trim-dir (use 0 for
                                no limit); available suffixes: kB, MB, GB, TB
                                (decimal) and KiB, MiB, GiB, TiB (binary);